Perhaps you should try some spelling variations:
thanh trung » thanh tung
nhung cong » dung cong, thong cong, hang cong
hien manh » hien hanh, tien manh, hieu manh
trung cua » truong cua, trung tuan, trung cap
cua nhung » va nhung
cong tac » cong ty
toan cao » toan ban, toan tap
doan dau » doan dieu, phan dau, doan va

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc hien manh - thanh trung cua nhung cong tac ((toan cao) or (doan dau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien manh - thanh trung cua nhung cong tac ((toan cao) OR (doan dau)).
• Adding a wildcard symbol may retrieve word variants: hoc hien manh - thanh trung cua nhung cong tac ((toan cao) or (doan dau))*.