Perhaps you should try some spelling variations:
information costs » information contents, information centers, information content
de communication » mobile communication, online communication
developing karst » developing east, developing forest, developing heart
costs practice » courts practice, cases practice, court practice
3 developing » 3 development
practice de » practice d, practice deal, practice 1
karst areas » karstic areas, forest areas, thrust areas
costs 3 » costs _, costs 4, costs a

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

• Adding a wildcard symbol may retrieve word variants: technologies _ information costs practice de communication costs 3 developing karst areas.*.