Perhaps you should try some spelling variations:
yemen communication » yemen communications, human communication, open communication
12.4 developing » 1.4 developing, 2.2 developing, 1.3 developing
technologie de » technologies de, technologie der, technologie die
de information » die information, de informacion, e information
developing eq » developing e, developing egg, developing _
contents 12 » contents 1, contents 19, contents 12.1
costs 12.4 » costs 11.4, costs 12.3, costs 2.4
eq africa » em africa, eu africa, 1 africa
12 yemen » 2012 yemen, _ yemen, 12 women

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

• Adding a wildcard symbol may retrieve word variants: technologie de information contents 12 yemen communication costs 12.4 developing eq africa.*.