Perhaps you should try some spelling variations:
functions conditional » functions functional, functional conditioning, functions computational
programming building » programming using, framing building
programming learning » programmed learning, programming using
arrays virus » assays virus, arrays virtual, arrays via

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

• If you are trying to use Boolean operators, they must be ALL CAPS: functions conditional ((programming building) OR (programming learning)) arrays virus~.
• Adding a wildcard symbol may retrieve word variants: functions conditional ((programming building) or (programming learning)) arrays virus*.