You can search two words in a string that are separated by a specific number of other words by performing a proximity search. To do a proximity search, use the tilde '~' symbol at the end of the search phrase. For example, if the search keyword is Books Online, you can use the search query "books online"~n, where n stands for the number of words (distance) between the two keywords. The search result will display the files that has the search keywords at the proximity level 0 to n.
For example to search for books and online within three words of each other, submit the search phrase as:
"books online"~3
Considerations
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The order of your search terms must be considered when performing a proximity search. For example, performing a proximity search of "books online"~3 will return search results wherein the word books appears before online.
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To perform a proximity search using one or more exact phrases as your search terms, the exact phrase must begin and end with escaped quotation marks.
For example to search for the exact phrase books online and search within three words of each other, submit the search phrase as:
"\"books online\" search"~3