Perhaps you should try some spelling variations:
communication phase » communication case, communication based, communication paper
3.2 communication » 3 communication, 2.3 communication, de communication
der developpement » de developpement, des developpements, leur developpement
rate information » trade information, care information, age information
developpement en » developpement et, developpement des, developpement de
technology rate » technology state, technology role, technology related
information gas » information gaps, information gap, information goods
prices 3.2 » price 3.2, prices 3.1, prices 4.2

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

• Adding a wildcard symbol may retrieve word variants: technology rate information gas prices 3.2 communication phase der developpement en afrique.*.