Perhaps you should try some spelling variations:
communication cost » communication costs, communication costa, communications costs
clean development » human development, urban development
technology basic » technology based, technology asia, terminology basic
de communication » mobile communication, online communication
development camp » development amp, development case, development can
basic relations » basic regulations, asia relations, basic relationship
relations do » relations du, relations das, relations der
camp arrival » time arrival
cost clean » costs clear
prices de » prices does, prices _, prices a

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

• Adding a wildcard symbol may retrieve word variants: technology basic relations do prices de communication cost clean development camp arrival.*.