Search queries with operators

Advanced search is powerful, but combersome to apply and manage. I would wish for a proper search with syntax and operators to be available. For exmple:

keywords="AAA" OR "BBB" NOT "CCC"
orientation="landscape" AND aperture>=2.8
copyright=isNull

Please support all or most search/filter criteria of COP and include various operators to finetune without a mouse and separate menu:

Comparison (>,<,= etc.)
Logical (AND, OR, NOT)
Special Operators (IN, isNull, isNotNull...)