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
tang thanh » dang thanh, trung thanh, hoang thanh
dung cong » dung trong
tan thanh » tran thanh, toan thanh, ban thanh
dung qua » duong qua, dung quan, dung cua
qua dung » quang dung, su dung, qua song

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