|< Day Day Up >|
1.6. Mixing Syntax
There was a time when you couldn't mix Google's special syntax elements; you were limited to one per query. Even as Google released ever more powerful special syntax elements, not being able to combine them for their composite power stunted many a search.
This has since changed. While there remain some syntax elements that you just can't mix, there are plenty to combine in clever and powerful ways. A thoughtful combination can do wonders to narrow a search.
1.6.1. How Not to Mix Syntax
There are some simple rules to follow when mixing syntax elements. These, for the most part, revolve around how not to mix.
1.6.2. How to Mix Syntax
If you're trying to narrow down search results, the intitle: and site: syntax elements are your best bet.
184.108.40.206 Titles and sites
For example, say you want to get an idea of what databases are offered by the state of Texas. Run this search:
intitle:search intitle:records site:tx.us
You'll find something on the order of 30 very targeted results. And, of course, you can narrow down your search even more by adding keywords:
birth intitle:search intitle:records site:tx.us
It doesn't seem to matter whether you put plain keywords at the beginning or the end of the search query; I put them at the beginning because they're easier to keep up with.
The site: syntax, unlike site syntax on other search engines, allows you to get as general as a domain suffix (site:com) or as specific as a domain or subdomain (site:thomas.loc.gov). So if you're looking for records in El Paso, you can use this query:
and you'll get approximately one result.
220.127.116.11 Title and URL
Sometimes you want to find a certain type of information, but you don't want to narrow by type. Instead, you want to narrow by theme of information (e.g., you want help or a search engine). That's when you need to search in the URL.
The inurl: syntax will search for a string in the URL but won't count finding it within a larger word. So, for example, if you search for inurl:research, Google will not find pages from www.researchbuzz.com, but it will find pages from www.research-councils.ac.uk.
Say you want to find information on neurosurgery, with an emphasis on learning or assistance. Try:
This returns a more manageable 880 or so results. The whole point is to get a number of results that finds what you need but isn't so large as to be overwhelming. If you find 880 results overwhelming, you can easily mix the site: syntax into the search and limit your results to universities:
intitle:neurosurgery inurl:help site:edu
Beware, however, of using too much special syntax. As mentioned earlier, you can quickly detail yourself into no results at all.
1.6.3. The Antisocial Syntax Elements
The other antisocial syntax is link:, which shows pages that have a link to a specified URL. Wouldn't it be great if you could specify what domains you want the pages to be from? Sorry, you can't. The link: syntax does not mix with anything else—not even plain old keywords.
For example, say you want to find out what pages link to O'Reilly Media, Inc., but you don't want to include pages from the .edu domain. The query link:www.oreilly.com -site:edu will not work because the link: syntax does not work in combination. Well, that's not quite correct; you will get results, but they'll be for the phrase "link:www.oreilly.com" from domains that are not .edu.
If you want to search for links and exclude the .edu domain, there's no single command that will absolutely work. This one's a good try, though:
inanchor:oreilly -inurl:oreilly -site:edu
This search looks for the word "oreilly" in anchor text, the text that's used to define links; excludes pages that contain "oreilly" in the search result (e.g., oreilly.com); and, finally, excludes those pages that come from the .edu domain.
But this type of search is nowhere near complete. It finds only those links to O'Reilly that include the string "oreilly": if someone creates a link such as <a href="http://perl.oreilly.com/">Camel Book</a>, it won't be found by the preceding query. Furthermore, there are other domains that contain the string "oreilly," and there may be domains that link to "oreilly" that contain the string "oreilly" but aren't oreilly.com. You could alter the string slightly, to omit the oreilly.com site itself but not other sites containing the string "oreilly":
inanchor:oreilly -site:oreilly.com -site:edu
However, you would still be including many O'Reilly sites—XML.com and MacDevCenter.com, for instance—that aren't at oreilly.com.
1.6.4. All the Possibilities
While it is possible to write down every syntax-mixing combination and briefly explain how they might be useful, there wouldn't be room for much else in this book.
Experiment. Experiment a lot. Constantly keep in mind that most of these syntax elements do not stand alone, and you can get more done by combining them than by using them individually
Depending on what kind of research you are doing, different patterns will emerge over time. For example, you may discover that focusing on only PDF documents (filetype:pdf) finds you the results you need. You may discover that you should concentrate on specific file types in specific domains (filetype:ppt site:tompeters.com). Mix up the syntax in as many ways as is relevant to your research and see what you get.
As with anything else, the more you use Google's special syntax, the more natural it will become to you. And Google is constantly adding more, much to the delight of regular web combers.
|< Day Day Up >|