Perhaps you should try some spelling variations:
communication phase » communication case, communication based, communication paper
confirmation bias » confirmation _
2.1 communication » 2.14 communication, 2.3 communication, 2.7 communication
end confirmation » und konfirmation, aesi confirmation, side confirmation
le developpement » de developpement, sme development
developpement la » developpement de, developpement et, developpement du
technology end » technology e, technology e.g, technology era
bias prices » gas prices, biomass prices, bonds prices
prices 2.1 » prices 2.4, prices 2.3, prices 3.1
la afrique » l afrique, la fabrique, en afrique
phase le » phase de, phase life, phase der

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

• Adding a wildcard symbol may retrieve word variants: technology end confirmation bias prices 2.1 communication phase le developpement la afrique.*.