To look for words with the same prefix use * : e.g. index*
to find index, indexing, indexed, and so on.
To search for all forms of a word use ** : e.g. drink** to
find drink, drinking, drank and drunk.
Search with the word NEAR, rather than AND, for words close to each
other : e.g. both internet AND protocol and internet NEAR
protocol look for the words internet and protocol
on the same page. But with NEAR, the returned pages are ranked in order
of proximity: The closer together the words are, the higher the rank
of that page.
Refine queries using the keywords AND, OR, and NOT : e.g. business
AND NOT development will find all instances of business but not
development,
Business OR Development will all instances of business or development
or both.
To search for a phrase put quotes around the phrase : e.g. "business
development" will return all instances with the phrase business
development.
Use Free Text Queries if you want to
enter queries using natural language. You can enter any text you want,
from a proper question, to a string of words and phrases : e.g. "How
do I use the Free Text Query?" will result in an automatic creation
of a query and the search will begin. Note that when using Free Text
queries, the regular query language features are disabled and keywords
such as AND,OR, and NEAR are interpreted as normal words