Perhaps you should try some spelling variations:
5.2 communication » 3.2 communication, 6.2 communication, 2.2 communication
21st information » cost information, ist information, asset information
technology 21st » technology 2.1.1, technology 2.1.2, technology 2.1.3
development min » development main, development menu, development may
min afrique » en afrique
about rate » about race, about state, about later
rate 5.2 » rates 5.2, rate 5.4, rate 4.2
costs 2 » costs 20, costs _, costs 4

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

• Adding a wildcard symbol may retrieve word variants: technology 21st information about rate 5.2 communication costs 2 development min afrique.*.