Perhaps you should try some spelling variations:
school conservation » school construction, soil conservation, school cooperation
creating services » creating service, creative services, heating services
survey school » survey tool, sydney school
supply cost » supply costs
supply co » supply ch, supply cold, supply cote

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( ((supply co) OR (supply cost)) creating services. ) or ( survey school conservation efforts. ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( ((supply co) OR (supply cost)) creating services. ) OR ( survey school conservation efforts. ))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( ((supply co) OR (supply cost)) creating services. ) or ( survey school conservation efforts. ))*".