Perhaps you should try some spelling variations:
trung cong » truong cong, trong cong, trung uong
hanh tang » hanh trang, anh tang, hanh mang
cua trung » cua truong, xuan trung, cua nhung
thanh cac » hanh cac, thanh bac, thanh ca
chi tinh » chai tinh, chi minh, chi binh
tang cua » mang cua, hang cua, tang luan
cong tac » cong ty
than cap » khan cap, thanh lap, than cua
doi chi » doi khi

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: doi chi tinh - hanh tang cua trung cong tac ((than cap) OR (thanh cac))~.
• Adding a wildcard symbol may retrieve word variants: doi chi tinh - hanh tang cua trung cong tac ((than cap) or (thanh cac))*.