- AND : use this term in between the keywords, if there are many key words. so that the pages which that include all the keywords will appear.
- Inverted Commas ("") : This is use to specify a phrase. This will reduce the number of pages. but should be careful to use the correct word always.
- NOT: This word will exclude the topic from your search. This should be used in between the keyword you want to search and the word you want to exclude.
- OR : This is use to find the one or more pages of two or more words.
- Wildcard (?) : to find the variations of the keywords. This symbol differs from search engine to search engine.
If you are following an efficient search strategy you should be able to find the most related information to your topic, and exclude the irrelevant information. and also to not to exclude the relevant and have few attempts to find information.