Perhaps you should try some spelling variations:
communication costly » communication costs, communication costa, communications costs
3.2 communication » 3 communication, 2.3 communication, de communication
inflation trade » inflation rate, inflation rates, inflation tax
development law » development latin, development 1
technology 3 » technology _, technology 1, technology 4
trade reduce » trade regime
costly world » post world, lost world
3 inflation » _ inflation, 2 inflation, 6 inflation
law afrique » l afrique

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

• Adding a wildcard symbol may retrieve word variants: technology 3 inflation trade reduce 3.2 communication costly world development law afrique.*.