Perhaps you should try some spelling variations:
technology volume » technologies volume, seismology volume, technology evolution
volume evaluation » value evaluation, course evaluation, use evaluation
6.2 communication » 3.2 communication, 2.3 communication, 2.7 communication
evaluation rates » valuation rate, evaluation related, evaluation test
de developpement » sme development
developpement en » developpement et, developpement des, developpement de
rates case » rates cape, states case, rates east
case 6.2 » case 6.12, case f6.2, case 4.2
costs de » costs _, costs 4, costs a

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

• Adding a wildcard symbol may retrieve word variants: technology volume evaluation rates case 6.2 communication costs de developpement en afrique.*.