Perhaps you should try some spelling variations:
observational cinema » observational clinical, observational context, observational economy
observation concepts » observational concepts, conservation concepts, obervations concepts
observation concept » conservation concept, observation content, observation conceptual

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: ((observational cinema) OR (((observation concept) OR (observation concepts)))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((observational cinema) or (((observation concept) OR (observation concepts))))".
• Adding a wildcard symbol may retrieve word variants: ((observational cinema) or (((observation concept) OR (observation concepts))))*.