Perhaps you should try some spelling variations:
6.2 communication » 3.2 communication, 2.3 communication, 2.7 communication
de developpement » sme development
developpement de » developpement des, developpement durable
technology 21st » technology 2.1.1, technology 2.1.2, technology 2.1.3
21st inflation » 10 inflation, 12 inflation, 2 inflation
de afrique » de l'afrique, en afrique, l afrique
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 21st inflation _ case 6.2 communication costs de developpement de afrique.*.