Perhaps you should try some spelling variations:
functions computational » function computation, directions computational, section computational
functions computation » function computation, functions composition, function composition
programming caching » programming making, programming learning, programming building
caching methods » catching methods, coaching methods, teaching methods
methods charles » methods chapter, methods tables, methods examples

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 computation) OR (functions computational)) programming caching methods charles~.
• Adding a wildcard symbol may retrieve word variants: ((functions computation) or (functions computational)) programming caching methods charles*.