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
cua nhung » va nhung
tung cua » trung cua, tuong cua, dung cua
cong ban » cong bang, cong dan, dong ban
cong tan » cong tac, cong thanh, cong ty
cong san » cong tac
than cau » toan cau, phan cau, than cap

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