Perhaps you should try some spelling variations:
technological changes » technological change, technological advances
changes informations » change information, chandos information, channels information
de communication » mobile communication, online communication
4 developing » 3 developing
und fehl » und mehl, und fehler, und feld
fehl de » fehlt der
costs 4 » costs _, costs a, costs 4.2

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

• Adding a wildcard symbol may retrieve word variants: technological changes informations und fehl de communication costs 4 developing _ areas.*.