Perhaps you should try some spelling variations:
thieu sang » chieu sang, thieu khang, thieu quang
thanh tung » thanh cong
hoc thieu » toc thieu, hoc hien
thanh bac » nhanh bac, thanh bai, thanh san
tung cay » tuong cay, dung cay, rung cay
cong tan » cong tac, cong san, cong thanh
than cap » khan cap, thanh lap, thanh cac

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 tung cay trong cong tan ((than cap) or (thanh bac))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu sang - thanh tung cay trong cong tan ((than cap) OR (thanh bac)).
• Adding a wildcard symbol may retrieve word variants: hoc thieu sang - thanh tung cay trong cong tan ((than cap) or (thanh bac))*.