Perhaps you should try some spelling variations:
ethical committees » ethics committees, technical committees, technical committee
ethics committee » ethics committees
ethics commitee » ethics committees, ethics computer, ethics commitments

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: ((((ethics commitee) OR (ethical committees))) OR (ethics committee)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((ethics commitee) OR (ethical committees))) or (ethics committee))".
• Adding a wildcard symbol may retrieve word variants: ((((ethics commitee) OR (ethical committees))) or (ethics committee))*.