Perhaps you should try some spelling variations:
technologien stem » technologien des, technologien am, technologien im
de communication » mobile communication, online communication
formation phase » formation chapter
stem formation » system formation, slum formation, team formation
1.3 developing » 3.3 developing, 13 developing, 7.3 developing
developing 2 » developing _, developing a, developing e
phase des » phasen des, phase der
costs 1.3 » costs 12.3, costs 14.3, costs 15.3
2 areas » 1 areas, 2 areal, 4 areas
des de » des dem, des der, des des

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

• Adding a wildcard symbol may retrieve word variants: technologien stem formation phase des de communication costs 1.3 developing 2 areas.*.