Perhaps you should try some spelling variations:
communication cost » communication costs, communication costa, communications costs
de communication » mobile communication, online communication
developing arab » developing areas, developing asian, development arab
2.2 developing » 3.2 developing, 3.3 developing, 2.2 development
formation iii » formation ii, formulation iii, information iii
arab american » arab americans, arabian american, abroad american
technology 1 » technology _
1 formation » 1.2 formation, de formation, en formation
iii debates » iii debatten, life debates
debates de » debates we, debates did, debates _
cost 2.2 » costs 2.2, cost 2.4, cost 3.2

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

• Adding a wildcard symbol may retrieve word variants: technology 1 formation iii debates de communication cost 2.2 developing arab american.*.