Perhaps you should try some spelling variations:
thanh trung » thanh tung
chung tuong » chung thong, nhung tuong, chuong duong
chieu sang » chieu sach, chieu xanh, nhieu tang
trung dung » ung dung, trung uong, trinh dung
dung chung » dung cong, dung ung, dung trung
hieu lang » hieu quang, nhieu tang, hieu van
tuong ban » tuong bang, trong ban, tuong dan
ban thanh » ban hanh, ban hang
thanh cap » thanh lap, hanh cap, than cap

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((chieu sang) or (hieu lang)) - thanh trung dung chung tuong ban thanh cap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((chieu sang) OR (hieu lang)) - thanh trung dung chung tuong ban thanh cap.
• Adding a wildcard symbol may retrieve word variants: hoc ((chieu sang) or (hieu lang)) - thanh trung dung chung tuong ban thanh cap*.