Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
canh doanh » hanh doanh, chinh doanh, doanh doanh
hoc thieu » toc thieu, hoc hien
cua tong » cua cong, cua song, cua ong
cua nong » cua cong, cuu nong, cua song
cua dong » chua dong, cua cong, cua dang
cong tan » cong tac, cong san, cong thanh
tan chan » dan chan, ban chan, can chan
chan dau » phan dau, han dau, chan doan

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 - canh doanh ((cua tong) or (((cua nong) OR (cua dong)))) cong tan chan dau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu xanh - canh doanh ((cua tong) OR (((cua nong) OR (cua dong)))) cong tan chan dau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu xanh - canh doanh ((cua tong) or (((cua nong) OR (cua dong)))) cong tan chan dau".
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - canh doanh ((cua tong) or (((cua nong) OR (cua dong)))) cong tan chan dau*.