Perhaps you should try some spelling variations:
canh trinh » canh tranh, hanh trinh, canh tinh
hien manh » hien hanh, tien manh, hieu manh
trinh va » trinh van, trinh vat, trinh ve
nong dan » cong dan, nguong dan, huong dan
nong san » cong san, dong san, trong san
phan cau » phan dau, phan cac, phan tu
va lang » va nang, hoa lang

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc hien manh - canh trinh va lang ((nong dan) OR (nong san)) phan cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc hien manh - canh trinh va lang ((nong dan) OR (nong san)) phan cau*".