Perhaps you should try some spelling variations:
9.3.1 communication » 9.4.1 communication, 3.3.2 communication, 3.4.1 communication
de developpement » sme development
developpement de » developpement des, developpement durable
technology used » technology use, technology based, technology users
used inflation » und inflation, cases inflation, musil inflation
crimes 9.3.1 » crimes 9.3.2, crimes 1.4.1, crimes 3.1
costs de » costs _, costs 4, costs a
de farce » der farce, de arce, de force

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

• Adding a wildcard symbol may retrieve word variants: technology used inflation _ crimes 9.3.1 communication costs de developpement de farce.*.