Roman,

I'm not sure if this is what you are looking for, but assuming indexes exist

if ( ( indexseek( TableA,Field1, .f., "LookupB", "FieldXTag" ) and ;
     ( indexseek( TableA,Field2, .f., "LookupC", "FieldYTag" ) and ;
     ( indexseek( TableA,Field3, .f., "LookupD", "FieldZTag" ) )

you can AND/OR the results of individual indexseek()s together. This would make sure that TableA.Field1 is found in LookupB.FieldX and TableA.Field2 is found in LookupC.FieldY and TableA.Field3 is found in LookupD.FieldZ. It's also possible to lookup different fields within the same lookup tables.

>Is there a way I can use SEEK, SEEK(), INDEXSEEK() for finding a record that must matches the value of several fields without using '+' to join fields in the expresion of the index?
>if it is possible, could you an example.