Perhaps you should try some spelling variations:
nhung tuong » nhung huong, nhung phuong, hung vuong
thieu sang » chieu sang, thieu khang, thieu quang
hoc thieu » toc thieu, hoc hien
trung vap » trung cap, trung van, trung lap
tuong van » truong van, trong van, duong van
van thanh » ban thanh, van tuan
thanh cap » thanh lap, hanh cap, than cap
trung va » truong va, trang va, trung ha

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 vap) or (trung va)) nhung tuong van thanh cap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu sang - thanh ((trung vap) OR (trung va)) nhung tuong van thanh cap.
• Adding a wildcard symbol may retrieve word variants: hoc thieu sang - thanh ((trung vap) or (trung va)) nhung tuong van thanh cap*.