Perhaps you should try some spelling variations:
functionality mission » functionality design, functionality using, functionality maps
functionality vision » functionality design, functionality using, functionality risk
interface python » interface method, interface proton, interface methods
python programs » python program, action programs, method programs

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

• Performing a fuzzy search may retrieve terms with similar spellings: interface python programs ((functionality vision) or (functionality mission)) https~.
• If you are trying to use Boolean operators, they must be ALL CAPS: interface python programs ((functionality vision) OR (functionality mission)) https.
• Adding a wildcard symbol may retrieve word variants: interface python programs ((functionality vision) or (functionality mission)) https*.