Perhaps you should try some spelling variations:
thieu sang » chieu sang, thieu khang, thieu quang
hoc thieu » toc thieu, hoc hien
hang cong » dang cong, hang nong, bang cong
ban nhanh » ban hanh, ban thanh, ban nhan
nhanh bac » nhanh ha, nhanh va
tuong va » truong va, thuong va, duong va
luong va » dung va
cong ban » cong bang, cong san, cong tan

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 ((tuong va) or (luong va)) hang cong ban nhanh bac~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu sang - thanh ((tuong va) OR (luong va)) hang cong ban nhanh bac*.