Perhaps you should try some spelling variations:
communications costs » communication costs, communications _
development acute » development act, development route, development age
technology level » technology never, technology leader, technology led
acute aortic » after aortic
relative de » relative sea, relative age, relative _
de politics » de politicas, de politica, do politics
costs human » sts human, ghosts humans, beasts human

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

• Adding a wildcard symbol may retrieve word variants: technology level relative de politics _ communications costs human development acute aortic.*.