Perhaps you should try some spelling variations:
international power » international poverty, international ports, international panel
basic conservation » basic considerations, marine conservation, basic constructions
die international » die internationale, die internationalen, time international
supply basic » supply asia, supply based, supply elastic
export die » exporte die, export day, export fdi

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 basic conservation efforts. ) OR ( export die international power. ))~.
• Adding a wildcard symbol may retrieve word variants: (( supply basic conservation efforts. ) or ( export die international power. ))*.