Perhaps you should try some spelling variations:
hieu manh » chieu xanh, hieu nganh, dieu hanh
tranh cua » doanh cua, manh cua
cong nong » cong dong, cong cong, cong trong
hoc hieu » hoc thieu, hoc hien, doc hieu
nong dan » cong dan, nong san, nguong dan
phan cau » phan cac, phan tu, phan lap
phan dau » phan tu, hang dau

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc hieu manh - canh tranh cua cong nong dan ((phan cau) OR (phan dau))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc hieu manh - canh tranh cua cong nong dan ((phan cau) OR (phan dau))".
• Adding a wildcard symbol may retrieve word variants: hoc hieu manh - canh tranh cua cong nong dan ((phan cau) OR (phan dau))*.