Perhaps you should try some spelling variations:
thanh trung » thanh tung
chiet tach » chieu sach
thien anh » thien danh, tien anh, thien thanh
manh toan » thanh toan, anh tuan, tinh toan
trung ha » trung hoc, trung tam, trung cap
ban than » ban thanh, van thanh, ban hang
ha dung » hai dung, kha dung, nha dung

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((chiet tach) or (thien anh)) - thanh trung ha dung trong ((manh toan) or (ban than)) cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((chiet tach) OR (thien anh)) - thanh trung ha dung trong ((manh toan) OR (ban than)) cao.
• Adding a wildcard symbol may retrieve word variants: hoc ((chiet tach) or (thien anh)) - thanh trung ha dung trong ((manh toan) or (ban than)) cao*.