Perhaps you should try some spelling variations:
thanh thuong » thanh huong, thanh chuong, thanh phuong
thieu quang » hieu quang, thien quan, trien quang
thuong quan » thuong quang, thong quan, truong quan
thieu sang » chieu sang, thieu khang, hieu lang
quan thong » quang thong, quan trong, xuan thong
cong doan » cong hoan, dong doanh, cong san
cong dan » cong san, cong tan, huong dan
phan cac » nhan cach, phan dau, phan lap

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