Perhaps you should try some spelling variations:
international airport » international transport, international airshow
raise international » case international, rate international, cause internationale
lines conservation » lands conservation, sites conservation, plants conservation
supply raise » supply rise, supply case, supply risk

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( supply raise international airport. ) or ( supply lines conservation efforts. ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( supply raise international airport. ) OR ( supply lines conservation efforts. )).
• Adding a wildcard symbol may retrieve word variants: (( supply raise international airport. ) or ( supply lines conservation efforts. ))*.