Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
hieu xanh » chieu xanh, hieu manh, hieu nganh
trinh cua » tinh cua, trinh luat, trinh quan
hang nong » thang long
doc hieu » toc thieu, hoc thieu, hoc hien
dan than » dan chan, ban than, van than
than cau » toan cau, phan cau, than cap

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 - hanh trinh cua ((((hang nong) or (han tong))) or (dung trong)) dan than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc hieu xanh - hanh trinh cua ((((hang nong) OR (han tong))) OR (dung trong)) dan than cau.
• Adding a wildcard symbol may retrieve word variants: doc hieu xanh - hanh trinh cua ((((hang nong) or (han tong))) or (dung trong)) dan than cau*.