Perhaps you should try some spelling variations:
thieu quang » hieu quang, thien quan, trien quang
truong quan » trong quan, thong quan, luong quan
nhung tuong » nhung huong, nhung phuong, hung vuong
chieu sang » chieu sach, chieu xanh, hieu lang
truong cua » truong ca, truong cao, huong cua
tuong anh » truong anh, tuong lanh, trong anh
tuan cu » tuan tu, quan cua, tuan thu

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((chieu sang) or (thieu quang)) - thanh ((truong cua) OR (truong quan)) nhung tuong anh tuan cu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((chieu sang) OR (thieu quang)) - thanh ((truong cua) OR (truong quan)) nhung tuong anh tuan cu.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((chieu sang) or (thieu quang)) - thanh ((truong cua) OR (truong quan)) nhung tuong anh tuan cu".
• Adding a wildcard symbol may retrieve word variants: hoc ((chieu sang) or (thieu quang)) - thanh ((truong cua) OR (truong quan)) nhung tuong anh tuan cu*.