Perhaps you should try some spelling variations:
hieu xanh » chieu xanh, hieu manh, hieu nganh
canh manh » lanh manh, canh tranh, cach mang
doc hieu » toc thieu, hoc thieu, hoc hien
manh cua » doanh cua, ban cua
nong dan » nong san, nguong dan, huong dan
cong dan » cong san, cong tan, huong dan
ban tu » van tu
ba tu » ba thu, bac tu, bai tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: doc hieu xanh - canh manh cua ban ((nong dan) or (cong dan)) ((ba tu) or (ban tu))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc hieu xanh - canh manh cua ban ((nong dan) OR (cong dan)) ((ba tu) OR (ban tu)).
• Adding a wildcard symbol may retrieve word variants: doc hieu xanh - canh manh cua ban ((nong dan) or (cong dan)) ((ba tu) or (ban tu))*.