Perhaps you should try some spelling variations:
communication costly » communication costs, communication costa, communications costs
et communication » et communicatione, get communication, debt communication
land development » world development, child development
technology 6.1 » technology 3.1, technology 2.1, technology 4.1
creation rates » taxation rates, graduation rates, protection rates
6.1 creation » 3.1 creation, 6.2 creation, 6.3 creation
costly land » cost land, costs land, country land
rates afr » rates asfr, rate afr, rates a
afr et » fr et

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

• Adding a wildcard symbol may retrieve word variants: technology 6.1 creation rates afr et communication costly land development 1 africa.*.