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Databases


Online catalog - professional search

Type of search

Search items may be combined by different logic operators
Search field:  Truncation
Result list view: 
Search: 
Logic operators:       
Search string: 
 

Brief Help

Construct the search string combining different items with logic operators. You can enter both exact items and truncated ones. Truncation symbol - $ .

You can combine two or more items (according to their importance)

AND, NO - correspond to the symbols *, ^

OR - corresponds to the symbol +

Use parentheses ( ) to group portions of boolean queries for more complex searches, for example:
((A+B)*C)+((D+E)+F)^G

Construct your search according to following rules:

  1. No two logic operators can be placed one after another.
  2. Used parentheses must be paired.

 
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