Perhaps you should try some spelling variations:
4.3 communications » 4.3 communication, 2.3 communication, 1.3 communication
die developpement » de developpement, le developpement, du developpement
technology trade » technology trends, technology transfer, technology transfers
communications 2 » communications _, communications a, communications 5
developpement en » developpement et, developpement des, developpement de
trade sector » care sector
sector bayes » sector banks, sector based, sector players
bayes rules » bayes rule, basis rules, stages rules
rules 4.3 » rules 4.2, rules 3, rules 3.2

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

• Adding a wildcard symbol may retrieve word variants: technology trade sector bayes rules 4.3 communications 2 die developpement en afrique.*.