Perhaps you should try some spelling variations:
cell communications » cell communication, health communications, rural communications
trade development » software development
development ii » development iv, development 1, development india
des variablen » der variablen, die variablen, und variablen
ii afrique » en afrique, l afrique
und es » und eg, und east
und ed » und eid, 2nd ed, und eg
typologie » typologies, typology

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 des variablen ((und es) OR (und ed)) cell communications _ trade development ii afrique.~".
• Adding a wildcard symbol may retrieve word variants: typologie des variablen ((und es) OR (und ed)) cell communications _ trade development ii afrique.*.