Perhaps you should try some spelling variations:
chua dong » cua dong, ha dong, huy dong
tro thanh » thi thanh, tai thanh
chu bang » thu bang, chuc nang, chu quang
dung tro » dung tri, dung tru, dung trong
nong dan » nong san, nguong dan, huong dan
cong dan » cong san, cong tan, huong dan
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 ((chua dong) or (chu bang)) - sach dung tro thanh ((nong dan) or (cong dan)) toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chua dong) OR (chu bang)) - sach dung tro thanh ((nong dan) OR (cong dan)) toan cao.
• Adding a wildcard symbol may retrieve word variants: theo ((chua dong) or (chu bang)) - sach dung tro thanh ((nong dan) or (cong dan)) toan cao*.