Perhaps you should try some spelling variations:
thanh thuong » thanh huong, thanh chuong, thanh phuong
thuong dai » thuong mai, truong dai, thuong dam
hoc chinh » hoan chinh, hoc sinh, hoc kinh
nong van » song van, nong dan, nong san
cong dan » cong san, cong tan, huong dan
toan cao » toan ban, toan tap
doi chi » doi khi

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((doi chi) or (hoc chinh)) sach - thanh thuong dai han ((nong van) or (cong dan)) toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doi chi) OR (hoc chinh)) sach - thanh thuong dai han ((nong van) OR (cong dan)) toan cao.
• Adding a wildcard symbol may retrieve word variants: ((doi chi) or (hoc chinh)) sach - thanh thuong dai han ((nong van) or (cong dan)) toan cao*.