Perhaps you should try some spelling variations:
vector developments » sector developments, sector development, sectoral developments
communication cost » communication costs, communication costa, communications costs
de communication » mobile communication, online communication
relations 3.2.2 » relations 3.3.2, relations 4.2.2, relations 7.4.2
developments 3 » developments _, developments 4, developments pt
technology 1 » technology _
1 relations » 3 relations, a relations, 1.2 relations
3.2.2 cross » 3.3.2 cross, 3.2 cross
cost vector » class vector, reset vector, short vector
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 1 relations 3.2.2 cross de communication cost vector developments 3 aortic.*.