Perhaps you should try some spelling variations:
trung quan » truong quan, trong quan, truong quang
trung tuan » trung thanh, trung tam, tran tuan
cuong bang » cong bang, muong bang, tuong bang
hoc trieu » hoc thieu, hoc tieu, hoc dieu
thanh cac » hanh cac, thanh bac, thanh ca
cong ban » cong bang, cong san, cong tan

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc trieu tinh - hanh ((trung quan) OR (trung tuan)) nhung ((cong ban) or (cuong bang)) thanh cac~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc trieu tinh - hanh ((trung quan) OR (trung tuan)) nhung ((cong ban) OR (cuong bang)) thanh cac.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc trieu tinh - hanh ((trung quan) OR (trung tuan)) nhung ((cong ban) or (cuong bang)) thanh cac".
• Adding a wildcard symbol may retrieve word variants: hoc trieu tinh - hanh ((trung quan) OR (trung tuan)) nhung ((cong ban) or (cuong bang)) thanh cac*.