Perhaps you should try some spelling variations:
hydro development » hydropower development
communication 6.1 » communication 4.1, communication 7.1, communication 1.1
development local » development law, development level, development latin
e communication » de communication, 1 communication, une communication
typologien die » typologien der, typologie des, typologie der
die variation » de variation, does variation, der variation
does e » does de, does _, does a

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

• Adding a wildcard symbol may retrieve word variants: typologien die variation _ does e communication 6.1 hydro development local afrique.*.