Perhaps you should try some spelling variations:
intervention presentation » interaction presentation, intervention prevention, interventions prevention
programming defining » programming designing, programming reasoning, programming combining
programming learning » programmed learning, programming using, programming building
basics citrus » asian citrus, bali citrus, basics truss

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: intervention presentation ((programming defining) or (programming learning)) basics citrus~.
• If you are trying to use Boolean operators, they must be ALL CAPS: intervention presentation ((programming defining) OR (programming learning)) basics citrus.
• Adding a wildcard symbol may retrieve word variants: intervention presentation ((programming defining) or (programming learning)) basics citrus*.