Perhaps you should try some spelling variations:
thanh trung » thanh tung
thieu sang » chieu sang, thieu khang, thieu quang
thong cong » trong cong, tong cong, thong thong
hoc thieu » toc thieu, hoc hien
nhung don » nhung van, nhung bo
trung ca » trung cap, truong ca, trung cua
van toan » van tuan, van thanh, manh toan
van tan » van tuan, van ban, van tai

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 sang - thanh trung ca ((nhung don) or (thong cong)) ((van toan) or (van tan)) cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu sang - thanh trung ca ((nhung don) OR (thong cong)) ((van toan) OR (van tan)) cao.
• Adding a wildcard symbol may retrieve word variants: hoc thieu sang - thanh trung ca ((nhung don) or (thong cong)) ((van toan) or (van tan)) cao*.