Perhaps you should try some spelling variations:
navigation services » sanitation services, information services
integration report » integration efforts, innovation report
de integration » die integration, re integration, une integration
air navigation » _ navigation
support air » support agri, support a, support act
supply de » supply _, supply a, supply 3

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: (( supply de integration report. ) OR ( support air navigation services. ))~.
• Adding a wildcard symbol may retrieve word variants: (( supply de integration report. ) or ( support air navigation services. ))*.