Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, thien anh, thien danh
hieu manh » chieu xanh, hieu nganh, dieu hanh
hang nong » thang long, han tong
hanh han » hanh nhan, hanh phan, hanh san
cac hang » cac dang, cac bang, cac lang
nong dan » cong dan, nong san, nguong dan
dan toan » van toan, dan than, manh toan
toan cau » toan cao, toan ban, toan tap
han cac » phan cac, hang cac, hanh cac

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((thieu xanh) or (hieu manh)) - hanh han cac hang nong dan toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((thieu xanh) OR (hieu manh)) - hanh han cac hang nong dan toan cau.
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu xanh) or (hieu manh)) - hanh han cac hang nong dan toan cau*.