Perhaps you should try some spelling variations:
communication costly » communication costs, communication costa, communications costs
development american » development mexican, development numerical, development africa
trade development » software development
based innovation » und innovation
de communication » mobile communication, online communication
american asia » america asia, american china, american auto
costly trade » costs trade, country trade, costly than
her de » der de, ver de, fer de
a her » a hero, a herd, _ her

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

• Adding a wildcard symbol may retrieve word variants: technology based innovation a her de communication costly trade development american asia.*.