Perhaps you should try some spelling variations:
oral communication » personal communication
technologies can » technologies a, technologies co, technologies _
can integration » chain integration, von integration, urban integration
3 developing » 3 development
developing 4 » developing _, developing a, developing e
de oral » de otras, new oral
costs 3 » costs _, costs 4, costs a
4 areas » 1 areas, 2 areas, 4 areal
und de » und der, und des, und den

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

• Adding a wildcard symbol may retrieve word variants: technologies can integration und de oral communication costs 3 developing 4 areas.*.