Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
cua nhung » va nhung
theo cuu » theo chu, khao cuu, thao cua
anh tang » anh bang, anh dang, anh nang
tang cua » mang cua, hang cua, tang luan
cong tan » cong tac, cong san, cong thanh
toan tai » toan tap, doanh tai, toan cao
toan ban » van ban

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

• If you are trying to use Boolean operators, they must be ALL CAPS: theo cuu tinh - anh tang cua nhung cong tan ((toan tai) OR (toan ban))~.
• Adding a wildcard symbol may retrieve word variants: theo cuu tinh - anh tang cua nhung cong tan ((toan tai) or (toan ban))*.