Perhaps you should try some spelling variations:
thien hach » thien thanh, hien hanh
hoc thien » hoc hien, hoc thieu, hoc thiet
trung cua » truong cua, trung tuan, trung cap
truong ca » truong cao, truong va, trong ca
cong tan » cong san, cong thanh, cong ty
cong tac » cong ty
chan cap » khan cap, than cap, cao cap

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: hoc thien hach - thanh ((trung cua) OR (truong ca)) nhung ((cong tan) OR (cong tac)) chan cap~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thien hach - thanh ((trung cua) or (truong ca)) nhung ((cong tan) OR (cong tac)) chan cap~".
• Adding a wildcard symbol may retrieve word variants: hoc thien hach - thanh ((trung cua) or (truong ca)) nhung ((cong tan) OR (cong tac)) chan cap*.