Perhaps you should try some spelling variations:
development matters » development patterns, development partners, development centers
ethnology computer » technology computer, technology computers
clean development » human development, urban development
de communication » mobile communication, online communication
computer ratios » computer ratio, computer operation, computer graphics
ratios 2011 » ratios 11
2011 crises » 2011 crisis, 2011 causes
costs clean » costs clear
crises de » crises _, crises a, crises 2

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

• Adding a wildcard symbol may retrieve word variants: ethnology computer ratios 2011 crises de communication costs clean development matters _.*.