Perhaps you should try some spelling variations:
thanh chuong » thanh huong, thanh cong, nhanh chong
chieu sach » chinh sach, chiet tach, chieu xanh
chieu sang » chieu xanh, hieu lang, nhieu tang
chuong cao » truong cao, cuong cac, luong cao
tap doan » tap quan
doan cau » toan cau, doan dau, doan cap

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((chieu sach) OR (chieu sang)) - thanh chuong cao ((dung cong) or (dung trong)) tap doan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chieu sach) OR (chieu sang)) - thanh chuong cao ((dung cong) OR (dung trong)) tap doan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chieu sach) OR (chieu sang)) - thanh chuong cao ((dung cong) or (dung trong)) tap doan cau".
• Adding a wildcard symbol may retrieve word variants: theo ((chieu sach) OR (chieu sang)) - thanh chuong cao ((dung cong) or (dung trong)) tap doan cau*.