Perhaps you should try some spelling variations:
6.2 communication » 3.2 communication, 2.3 communication, 2.7 communication
developpement en » developpement et, developpement des, developpement de
isolation class » isolation can, isolation care, isolation haus
technology und » technology fund, technology used, technology use
und isolation » und inflation, dna isolation, und innovation
class lives » class lines, class life, class line
lives 6.2 » live 6.2, lives 1.2, lives 6.1

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

• Adding a wildcard symbol may retrieve word variants: technology und isolation class lives 6.2 communication costs _ developpement en afrique.*.