Perhaps you should try some spelling variations:
communication phase » communication case, communication based, communication paper
2.1 communication » 2.14 communication, 2.3 communication, 2.7 communication
la developpement » le developpement, de developpement, et developpement
developpement en » developpement et, developpement des, developpement de
inflation goods » inflation good, inflation gross, information goods
technology use » technology 1, technology 2.2, technology 3
use inflation » push inflation, und inflation, die inflation
goods prices » goods services, gas prices
prices 2.1 » prices 2.4, prices 2.3, prices 3.1
phase la » phase lag, phase a, phase das

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

• Adding a wildcard symbol may retrieve word variants: technology use inflation goods prices 2.1 communication phase la developpement en afrique.*.