Perhaps you should try some spelling variations:
thanh trung » thanh tung
phuong danh » phuong anh, phuong dinh, phuong hanh
theo chieu » theo tieu, ho chieu, theo chu
chieu sach » chinh sach, chiet tach, chieu sang
phuong dan » phuong doan, huong dan, phuong lan
trung cua » truong cua, trung tuan, trung cap
cua nhung » va nhung
toan ban » van ban

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 - thanh trung cua nhung ((phuong dan) or (phuong danh)) ((toan tap) OR (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chieu sach - thanh trung cua nhung ((phuong dan) OR (phuong danh)) ((toan tap) OR (toan ban)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo chieu sach - thanh trung cua nhung ((phuong dan) or (phuong danh)) ((toan tap) OR (toan ban))".
• Adding a wildcard symbol may retrieve word variants: theo chieu sach - thanh trung cua nhung ((phuong dan) or (phuong danh)) ((toan tap) OR (toan ban))*.