Make sure the spelling of your search terms is correct.

If you use more than a single word, you'll get more refined results.
Example: fission products will return more relevant results than only fission.

The more similar words you use, the more relevant results you will obtain.
Example: safe, secure, privacy, security.

Capitalize proper nouns. Lowercase words match any case.
Example: meadows will return all documents with the words meadows, Meadows and MEADOWS. Meadows will only search for pages about Meadows.

Use quotes to look for words which must appear adjacent to each other.
Example: Use "Process Modeling and Aerosol Techniques", otherwise search results will include the word Process, Modeling, and, Aerosol, and the word Techniques, but not necessarily in this order. Those words may appear anywhere, in any order within the document.

Use + when you want the search term or phrase appear in the search results. Use - to indicate unwanted term(s). A phrase must be contained within quotes. Leave no spaces between + or - and the term.

Use wildcards (use * as the wildcard character) to increase the number of matches for a request. quotes to look for words which must appear adjacent to each other.
Example: Using lab*, will return documents containing the words laboratory, laborious, labile, labyrinth and any other word starting with lab. If you search for *her* you'll find documents where here, either, thermal, and any other word that contains her anywhere in the word.

The use of field searches allows you to target for words appearing in a specific part of a document. You can perform a field search on:
• body text (body:),
• title text (title:),
• alt text (alt:),
• meta description (desc:),
• meta key words (keys:),
• or URL (url:).
The filed name should be in lowercase and immediately followed by a colon. Avoid spaces between the colon and the search term. The field searches can only be performed using a word or phrase. Phrases must be given within quotation marks.