Perhaps you should try some spelling variations:
wired communications » aided communications, speed communications, wireless communications
communications best » communication best, communications costs, communications pt
development male » development make, development mali, development scale
technology 21st » technology 2.1.1, technology 2.1.2, technology 2.1.3
oil development » rail development, tool development, social development
21st relative » 2 relative, 2.2 relative, das relative
crisis wired » crisis world, crisis were, crisis wanted
relative de » relative sea, relative age, relative _
male labor » female labor
de crisis » debt crisis, pre crisis, age crisis
best oil » bust oil, best joel, best tool

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

• Adding a wildcard symbol may retrieve word variants: technology 21st relative de crisis wired communications best oil development male labor.*.