Perhaps you should try some spelling variations:
communication phase » communication case, communication based, communication paper
3.1 communication » 3.1 communications, 3.2 communication, 3.5 communication
d1 developpement » de developpement, du developpement, le developpement
developpement il » developpement de, developpement et, developpement du
inflation gas » inflation das, inflation bias, inflation tax
prices 3.1 » prices 2.1, prices 3.2, prices 2.3.1
il afrique » l afrique, en afrique
phase d1 » phase 1, phase de, phase der

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

• Adding a wildcard symbol may retrieve word variants: technology _ inflation gas prices 3.1 communication phase d1 developpement il afrique.*.