Perhaps you should try some spelling variations:
through communications » through communication, through communicating, trough communication
communications costly » communications costs, communication costs, communication costa
trade development » software development
development case » development china
risk relations » risk regulations, milk relations, risk reductions
relations 3.1 » relations 2.1, relations 1, relations _
costly trade » costs trade, country trade, costly than
pre through » price through, care through, more through
case park » case part, cases part

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

• Adding a wildcard symbol may retrieve word variants: technology risk relations 3.1 pre through communications costly trade development case park.*.