Perhaps you should try some spelling variations:
thieu quang » hieu quang, trien quang, hieu quan
thieu sang » chieu sang, thieu khang, hieu lang
thien quan » trien quang, lien quan, thien van
thanh dung » thanh duong, thanh tung, thanh hung
nhung cong » dung cong, thong cong, hang cong
cua nhung » va nhung
cong vang » cong lang, cong quang, cong ngang
vang dang » van dang, dang dang, hoang dang
dang bang » dong bang, dang dang, tang bang
dung cua » dung luan, dung cho

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) OR (thieu quang))) or (thien quan)) - thanh dung cua nhung cong vang dang bang~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((((thieu sang) OR (thieu quang))) OR (thien quan)) - thanh dung cua nhung cong vang dang bang.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((((thieu sang) OR (thieu quang))) or (thien quan)) - thanh dung cua nhung cong vang dang bang".
• Adding a wildcard symbol may retrieve word variants: hoc ((((thieu sang) OR (thieu quang))) or (thien quan)) - thanh dung cua nhung cong vang dang bang*.