Perhaps you should try some spelling variations:
communication costly » communication costs, communication costa, communications costs
5.3 communication » 2.3 communication, 4.3 communication, 1.3 communication
trade development » software development
development band » development bank, development banks
inflation und » inflation index, inflation _, inflation tax
technology 3 » technology _, technology 1, technology 4
costly trade » costs trade, country trade, costly than
band afrique » en afrique
3 inflation » _ inflation, 2 inflation, 6 inflation
und ash » und cash, und nash, und asyl
ash 5.3 » ash 5.5

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

• Adding a wildcard symbol may retrieve word variants: technology 3 inflation und ash 5.3 communication costly trade development band afrique.*.