Perhaps you should try some spelling variations:
thanh trung » thanh tung
chiet tach » chieu sach
nhung cong » dung cong, hang cong, nhung don
thong cong » trong cong, tong cong, thong thong
theo lich » thai lich, theo sach
trung cap » truong cao, trung tam
tang tai » hang tai, dung tai, sang tao
tai cao » thai cao, tao cao, tai sao

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((theo lich) or (chiet tach)) - thanh trung cap ((nhung cong) or (thong cong)) tang tai cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((theo lich) OR (chiet tach)) - thanh trung cap ((nhung cong) OR (thong cong)) tang tai cao.
• Adding a wildcard symbol may retrieve word variants: hoc ((theo lich) or (chiet tach)) - thanh trung cap ((nhung cong) or (thong cong)) tang tai cao*.