# Anyone know how Seismic doc search can do a logical NOT to exclude uninteresting search results?

Typing "green cars" in a Seismic doc search gives me hundreds of hits containing "green" OR "cars".
But I want only hits of "green cars" not hits just containing "green" AND "cars" "green cars".
By trial and error in the Seismic search  I found that putting a period in the search string between does this AND search, good.
So logical AND is done as "green.cars"... OK.

But how does one add to the search a logical NOT? For example, "green.cars -fish" would do all hits for "green.cars" but exclude any hits containing the string "fish". This NOT doesn't work on Seismic.

Anyone know how to do a logical NOT in the Seismic search?

##### Post Metadata
- Posted at: over 6 years ago
- Net upvotes: 1


## Comments
### Comment 1

Hi Lawrence, 

If your query contains one, two or three words, Seismic's search returns all documents that contain all words (AND logic). If a query contains more than three words, the search result might contain documents that don't contain all the words, however, these documents will appear lower on the results page. Seismic's search functionality always uses the AND or OR logic. You can use the filters on the left hand side to further narrow down your results to find the document you are searching for. If you have further questions on our search functionality, please reach out to reviews@seismic.com and we can connect you with the appropriate contact on the product team. Thanks! 

##### Comment Metadata
- Posted at: over 6 years ago
- Author title: Customer Marketing Manager at Seismic




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