Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
hoc thieu » toc thieu, hoc hien
tranh cua » doanh cua, manh cua
hang nong » thang long, han tong
bang cong » dang cong, bang song, hang cong
than ban » thanh ban, than man, nhuan ban
toan ban » van ban

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 tranh cua ((hang nong) or (bang cong)) dan ((than ban) or (toan ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu xanh - canh tranh cua ((hang nong) OR (bang cong)) dan ((than ban) OR (toan ban)).
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - canh tranh cua ((hang nong) or (bang cong)) dan ((than ban) or (toan ban))*.