This search engine only allows keyword searching, so partial words and phrases will not work. For example:

•  searching for 'rado' will not find 'radon'
   
•  use 'statistics june 2003' instead of 'stats june 2003'
   
•  searching for 'radon gas' will actually search for documents that contain 'radon' and 'gas', but not necessarily the phrase 'radon gas'

If 'with ALL of the words' is selected, only those documents are returned which contain all of your search terms. For 'with ANY of the words' all documents are returned which contain at least one of your search terms.

Alternatively you can put a plus sign (+) directly in front of one or more words to only get those files which include all of those words. Words with a minus (-) sign directly in front of them change the result so that only documents are listed which don't contain any of those words.

The results are ordered by relevance with the most relevant documents listed first. Relevance depends on the number and position of matched words in the documents and also on the keywords assigned to each page.