Perhaps you should try some spelling variations:
thieu sang » chieu sang, thieu khang, thieu quang
thanh tung » thanh cong
quan nhung » qua nhung, cua nhung, luan chung
nhung cong » dung cong, thong cong, hang cong
hoc thieu » toc thieu, hoc hien
tung quan » tuong quan, trung quan, dung quan
cong ban » cong bang, cong san, cong tan
than cap » thanh lap, thanh cac, than va
than cua » nhan cua, thai cua, ban cua
khan cap » khan ap, khoan cam, phan 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 quan nhung cong ban ((((than cap) OR (than cua))) or (khan cap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu sang - thanh tung quan nhung cong ban ((((than cap) OR (than cua))) OR (khan cap))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu sang - thanh tung quan nhung cong ban ((((than cap) OR (than cua))) or (khan cap))*".