Perhaps you should try some spelling variations:
guinea communications » business communications, online communications, data communications
communications pt » communication pt, communications _, communications a
development eco » development second, development east, development menu
typologie der » typologie des, ideologie der
der variation » de variation, does variation, die variation
eco afrique » en afrique
6 ers » _ ers, 6 erc, 6 xrs
6 erp » _ erp, 5 erp, 2 erp

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "typologie der variation ((6 ers) OR (6 erp)) guinea communications pt gas development eco afrique.~".
• Adding a wildcard symbol may retrieve word variants: typologie der variation ((6 ers) OR (6 erp)) guinea communications pt gas development eco afrique.*.