Perhaps you should try some spelling variations:
national development » international development, institutional development, social development
3.2 communication » 3 communication, 2.3 communication, de communication
information rate » information ratio, information related, information matter
costs national » cross national, across national, gross national
technology 1 » technology _
rate rates » rates rates, dates rates, frame rates
rates 3.2 » rates 4.2, rates 5.2, states 3.2
1 afrique » l afrique, en afrique, 1 enrique

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

• Adding a wildcard symbol may retrieve word variants: technology 1 information rate rates 3.2 communication costs national development 1 afrique.*.