Perhaps you should try some spelling variations:
communication 4.4.2 » communication 4.2.2, communication 4.4.3, communications 6.4.2
true communication » truth communication, time communication, stroke communication
3.2 interaction » 3.2 introduction, face interaction
interaction 2.3 » interactions 2.3, interaction 3.3, interaction 2.1
das development » dams development, gas development, does development
technology 3.2 » technology 2.2, technology 3.1, technology 2
development en » developpement en, development menu, development eco
4.4.2 das » 5.4.2 das, 4.4.1 das, 4.4.2 case
2d true » 2 true, d true
2.3 2d » 3.3 2d, 4.3 2d

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

• Adding a wildcard symbol may retrieve word variants: technology 3.2 interaction 2.3 2d true communication 4.4.2 das development en afrique.*.