Perhaps you should try some spelling variations:
thieu quang » hieu quang, thien quan, trien quang
thieu sang » chieu sang, thieu khang, hieu lang
thanh tong » thanh cong, thanh tung, thanh long
nhung cong » dung cong, thong cong, hang cong
toan thanh » tran thanh, hoan thanh, toan thang
cua nhung » va nhung
tan thanh » tran thanh, tang thanh, ban thanh
tong cua » thong cua, trong cua, tuong 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) or (thieu quang)) - thanh tong cua nhung cong ((tan thanh) OR (toan thanh)) cap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu sang) OR (thieu quang)) - thanh tong cua nhung cong ((tan thanh) OR (toan thanh)) cap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thieu sang) or (thieu quang)) - thanh tong cua nhung cong ((tan thanh) OR (toan thanh)) cap".
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu sang) or (thieu quang)) - thanh tong cua nhung cong ((tan thanh) OR (toan thanh)) cap*.