Perhaps you should try some spelling variations:
thieu quang » hieu quang, thien quan, trien quang
thanh tuong » thanh thuong, thanh tung, thanh huong
nhung huong » nhung phuong, nhung tuong, nhung cong
thieu sang » chieu sang, thieu khang, hieu lang
tuong san » truong san, tuong sang, trong san
san nhung » sang nhung, ban nhung, sao nhung
phan cac » phan dau, phan lap, phan van

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 tuong san nhung huong dan ((phan cac) or (nhan cach))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu sang) OR (thieu quang)) - thanh tuong san nhung huong dan ((phan cac) OR (nhan cach)).
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu sang) or (thieu quang)) - thanh tuong san nhung huong dan ((phan cac) or (nhan cach))*.