Perhaps you should try some spelling variations:
observational clinical » observation clinical, observations clinical, observational logic
observational contacts » observational contrains, observational concepts, observational context
observational cinema » observational context, observational economy, observational clues
observation content » observation concept, observation consistent, observational context

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 clinical) OR (observational cinema))) OR (((observation content) OR (observational contacts))))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((observational clinical) OR (observational cinema))) or (((observation content) or (observational contacts))))*".