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
child development » world development
development law » development latin, development 1
technology 6 » technology _, technology 1, technology 3
costly child » foster child, only child, poster child
6 inflation » _ inflation, 2 inflation, d inflation
rate reduce » rates reduce, trade reduce, gates reduce
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 6 inflation rate reduce 3.2 communication costly child development law afrique.*.