Perhaps you should try some spelling variations:
nganh nong » nganh cong
cong thanh » dong thanh, cong trinh, truong thanh
cua nhung » va nhung
theo chu » theo chieu, cho chu, chao chu
chu sach » cau sach, thu sach, chieu sach
nong cua » cong cua, dong cua, song cua
cong tan » cong tac, cong san, cong ty
tran van » luan van

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo chu sach - nganh nong cua nhung ((cong tan) OR (cong thanh)) tran van~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo chu sach - nganh nong cua nhung ((cong tan) OR (cong thanh)) tran van*".