Perhaps you should try some spelling variations:
thanh trung » thanh tung
thieu xanh » chieu xanh, hieu manh, thien anh
chieu sach » chinh sach, chiet tach, chieu sang
tong cong » trong cong, cong cong, dung cong
trung ha » trung hoc, trung tam, trung cap
cong tan » cong tac, cong san, cong thanh
tan hang » tan khang, ban hang, van hang
hang tai » hang va, dung tai
ha tong » han tong, ha dong, ha tang

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((thieu xanh) or (chieu sach)) - thanh trung ha tong cong tan hang tai~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu xanh) OR (chieu sach)) - thanh trung ha tong cong tan hang tai.
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu xanh) or (chieu sach)) - thanh trung ha tong cong tan hang tai*.