Perhaps you should try some spelling variations:
thieu sang » chieu sang, thieu khang, thieu quang
thanh dung » thanh duong, thanh tung, thanh hung
luan nhung » luan chung, luan hung, quan nhung
nhung cong » dung cong, thong cong, hang cong
hoc thieu » toc thieu, hoc hien
thanh cac » hanh cac, thanh bac, thanh ca
cong san » cong tac
than cau » toan cau, phan cau, thanh chau
than cap » khan cap, thanh lap, than cua

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