Perhaps you should try some spelling variations:
ngo communication » togo communications, de communication, 3 communication
developpement en » developpement et, developpement des, developpement de
typologie 1.3 » typologie 10.4, typologies 2.3, typologies 6.3
1.3 variation » 3.3 variation, 1.1 variation, 1.4 variation
der ngo » der ngos, der neo, des ngo
a less » _ less, a lesson
a lens » _ lens

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 1.3 variation _ der ngo communication ((a less) OR (a lens)) developpement en afrique.~".
• Adding a wildcard symbol may retrieve word variants: typologie 1.3 variation _ der ngo communication ((a less) OR (a lens)) developpement en afrique.*.