Perhaps you should try some spelling variations:
communication cost » communication costs, communication costa, communications costs
technologies pack » technologies part, technologies past, technologies pay
6.4 communication » 5.4 communication, 1.4 communication, 2.4 communication
urban development » human development
pack information » bank information, risk information, 2 information
china africa » cpia africa, china asia
cost urban » most urban, worst urban, bust urban
3.2 csa » 3.2 case, 3.2 cost
csa 6.4 » csa 16.4, usa 6.4, esa 6.4

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

• Adding a wildcard symbol may retrieve word variants: technologies pack information 3.2 csa 6.4 communication cost urban development china africa.*.