You can tweak a little of the search engine by adding some keywords to your search query to enhance your search results. The principle behind this is that we enter some keywords which is recognised by the search engine as commands and this tweaks the search engine. Here is a list and the uses of some such keywords.
1) AND (&)- This combines two or more queries that you enter. For example, if you enter Michael Jackson + dead it will combine those keywords and gives you the search results. You may wonder that it is also the same if you enter it without AND command. This is because AND command is set as the default by the search engines.
2) OR (|)- This command would help you to get
webpages that contains either the "first keyword" or the "second keyword" but not both.
3) NOT- Excludes the term that is proceeded by NOT command. For example, if you type "michael NOT dead", then you will get the results only for "Michael" and not for "Michael dead".
4) " " - It includes the webpages that contains the exact phrases. For example if you type, ""Michael is great"", then you would get the
webpages that contains only that particular phrase.
These were some of the simple keywords. in order to get more power over the search engines use the following ones:
1) contains.(file extension) - This helps you to find videos, images and other files easily. The use of this command is, it returns the webpages that contains the extensions that your search query has. For example, if you type "images contains.jpg", it would show you the webpages that contains only the .jpg extension images.
2) site: (sitename) - This is a command well-known to everybody. This helps to search in a particular site. For example, if you enter, "site:http://www.tweakdaddy.blogspot.com/ Google", then you would get the pages of this blog that contains the word "Google"
3) translate : It helps you to translate particular words or phrases directly to the other languages.
4) location or loc - This helps you to search for the webpages with location filter, i.e., if you type "Google (loc:US)", you would get results that contain the keyword "Google" from USA.
5) url: - This is a command that helps you to check whether a URL is present in the search engine or not.