Perhaps you should try some spelling variations:
sector developments » sector development, recent developments
communication cost » communication costs, communication costa, communications costs
de communication » mobile communication, online communication
relations 3.3.2 » relation 3.3.2, relations 2.3.2, relations 7.3.2
technology set » technology sector, technology 1, technology 2.2
developments 3 » developments _, developments 4, developments pt
set relations » et relations, des relations, eu relations
3.3.2 cross » 3.2.2 cross, 3.3 cross
cost sector » cost vector, port sector, forest sector
cross de » cross age, cross sea, cross _
3 aortic » _ aortic, 3 acetic, _ artic

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

• Adding a wildcard symbol may retrieve word variants: technology set relations 3.3.2 cross de communication cost sector developments 3 aortic.*.