Perhaps you should try some spelling variations:
communication china » telecommunication china, communication costs, communication cross
fiber communication » power communication, better communication, de communication
early development » energy development, healthy development, theory development
development male » development make, development mali, development scale
negative import » negative impact, negative impacts, naive import
import prices » input prices
technology a » technology 1, technology 3, technology 4
prices fiber » prices figure, prices power, prices labor
china early » china pearl, china energy
a negative » _ negative, 2.2 negative, 3.3 negative
male labor » female labor

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

• Adding a wildcard symbol may retrieve word variants: technology a negative import prices fiber communication china early development male labor.*.