Perhaps you should try some spelling variations:
communication case » communications case, communication based, communication phase
3.2 communication » 3 communication, 2.3 communication, de communication
information war » information what, information wants, information when
das development » dams development, gas development, does development
3 information » 1 information
technology 3 » technology _, technology 1, technology 4
war rice » war race, war re, war risk
rice 3.2 » price 3.2, rice 3.1, rice 3.3
case das » case des, case case, case data

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

• Adding a wildcard symbol may retrieve word variants: technology 3 information war rice 3.2 communication case das development 1 africa.*.