Perhaps you should try some spelling variations:
thieu quang » hieu quang, thien quan, trien quang
thieu sang » chieu sang, thieu khang, hieu lang
thanh dung » thanh duong, thanh tung, thanh hung
song cong » cong cong, tong cong, song hong
dung qua » duong qua, dung quan, dung cua
cong can » cong san, cong tan, cong dan
phan cac » nhan cach, phan dau, phan van
phan lap » phan dau

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