אולי כדאי לנסות איות אחר או כתיב מלא:
security informatics » security information, secure information
database optimized » databases optimizing, database optimising, database limited
informatics https » bioinformatics https
https directional » wimps directional, aids directional, two directional
databases invited » databases united, databases induced, datasets invited

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• If you are trying to use Boolean operators, they must be ALL CAPS: security informatics https directional ((database optimized) OR (databases invited))~.
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