Perhaps you should try some spelling variations:
communication class » communication case, communication mass, communication cross
data resolving » dates resolving, data removing, ghana resolving
use decisions » based decisions, make decisions, fate decisions
data evolving » data involving, dogma evolving, bt evolving
data solving » data moving, data saving, data sieving
class use » class users, class age, classes user

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

• Performing a fuzzy search may retrieve terms with similar spellings: communication class use decisions ((((data solving) or (data evolving))) or (data resolving))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: communication class use decisions ((((data solving) OR (data evolving))) OR (data resolving)).
• Adding a wildcard symbol may retrieve word variants: communication class use decisions ((((data solving) or (data evolving))) or (data resolving))*.