Perhaps you should try some spelling variations:
resources development » resource development
communication cross » communication costs
de communication » mobile communication, online communication
development mode » development model, development models, development module
cross resources » access resources, coal resources, across sources
technology 2.2 » technology _, technology 1, technology 3
2.2 relative » 3.3 relative, _ relative, die relative
relative tea » relative sea, relative area, relative de
tea prices » real prices
mode labor » male labor, core labor, home labor
prices de » prices does, prices _, prices a

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

• Adding a wildcard symbol may retrieve word variants: technology 2.2 relative tea prices de communication cross resources development mode labor.*.