Perhaps you should try some spelling variations:
communication cost » communication costs, communication costa, communications costs
true communication » truth communication, time communication, stroke communication
power developments » power development, modern developments, other developments
developments from » development from, developments after, developments _
technology some » technology smes, technology soc, biotechnology some
some relation » comme relations, role relations, shape relation
relation co » relations co, relation c, relation von
primes true » crime true
cost power » cost per, soft power
co primes » co prime, _ primes
from dark » from dar, from darth, from data

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

• Adding a wildcard symbol may retrieve word variants: technology some relation co primes true communication cost power developments from dark.*.