Perhaps you should try some spelling variations:
communication cost » communication costs, communication costa, communications costs
information age » information storage, information access, information about
development co » development case, development china
die mobile » does mobile, das mobile, day mobile
cost staff » court staff, postal staff, forest staff
co afrique » en afrique, l afrique
age die » lage die, age de, frage die

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

• Adding a wildcard symbol may retrieve word variants: technology _ information age die mobile communication cost staff development co afrique.*.