Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu xanh
chieu sang » chieu xanh, hieu lang, nhieu tang
thanh tung » thanh cong
tham trong » pham trong, thay trong, than trong
trong dong » trong cong, trong nong, trong dang
dong thanh » truong thanh
tung tham » tuong tham, tung pham, cung tham
than cau » phan cau, than cap, thanh chau
toan cau » toan cao, toan ban, toan tap

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 tung tham trong dong thanh ((than cau) or (toan cau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chieu sach) OR (chieu sang)) - thanh tung tham trong dong thanh ((than cau) OR (toan cau)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chieu sach) OR (chieu sang)) - thanh tung tham trong dong thanh ((than cau) or (toan cau))".
• Adding a wildcard symbol may retrieve word variants: theo ((chieu sach) OR (chieu sang)) - thanh tung tham trong dong thanh ((than cau) or (toan cau))*.