Perhaps you should try some spelling variations:
implementation critical » implementations critical, implementation practical, implementations practical
implementation ethics » implementation ethical, implementation methods, implementation effects
revision belief » religion belief, decision belief, revising beliefs
belief it's » believe it's, belief bites

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

• Performing a fuzzy search may retrieve terms with similar spellings: population ((implementation ethics) or (implementation critical)) revision belief it's~.
• If you are trying to use Boolean operators, they must be ALL CAPS: population ((implementation ethics) OR (implementation critical)) revision belief it's.
• Adding a wildcard symbol may retrieve word variants: population ((implementation ethics) or (implementation critical)) revision belief it's*.