Perhaps you should try some spelling variations:
communication customs » communication costs, communication outcomes, communication cross
3.2 communication » 3 communication, 2.3 communication, de communication
customs resource » costs resource, systems resource, questions resource
technology die » technologie die, technology does, technology 4ir
development li » development lid, development lie, development lin
die inflation » does inflation, der inflation, price inflation
inflation und » inflation index, inflation _, inflation tax
li afrique » l afrique, en afrique
und case » und care, und cash, id case
case 3.2 » case 4.2, case 3.1, case 5.2

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

• Adding a wildcard symbol may retrieve word variants: technology die inflation und case 3.2 communication customs resource development li afrique.*.