Perhaps you should try some spelling variations:
thanh thuong » thanh huong, thanh chuong, thanh phuong
thieu sang » chieu sang, thieu khang, thieu quang
chieu sach » chinh sach, chiet tach, chieu sang
thuong va » truong va, thong va, thuong mai
cong vang » cong quang, cong ngang, cong san
cong lang » cong luong, cong quang, cong ngang
tan cao » toan cao, tao cao, tay cao

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 (chieu sach)) - thanh thuong va nhung ((cong vang) OR (cong lang)) tan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu sang) OR (chieu sach)) - thanh thuong va nhung ((cong vang) OR (cong lang)) tan cao*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thieu sang) or (chieu sach)) - thanh thuong va nhung ((cong vang) OR (cong lang)) tan cao*".