Perhaps you should try some spelling variations:
taiwan communication » taiwan communications, human communication, sign communication
interaction 4 » interaction _, interaction 1, interaction a
developing l2 » developing _, developing a, developing e
japan taiwan » japan thailand
4 developing » 3 developing
l2 afrique » l afrique, en afrique
4 japan » 4 japans, 3 japan, 1 japan
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: technologies _ interaction 4 japan taiwan communication costs 4 developing l2 afrique.*.