Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, hieu manh, thien anh
hanh trinh » canh tranh, hanh chinh
dang thanh » dong thanh, dang hanh, hoang thanh
hoc thieu » toc thieu, hoc hien
trinh vat » trinh van, trinh luat, sinh vat
hang cong » hang nong, bang cong, thanh cong
dang cong » dung cong
dan thanh » danh thanh, ban thanh, van thanh

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 - hanh trinh vat ((hang cong) OR (dang cong)) ((dan thanh) or (dang thanh)) ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu xanh - hanh trinh vat ((hang cong) OR (dang cong)) ((dan thanh) OR (dang thanh)) ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu xanh - hanh trinh vat ((hang cong) OR (dang cong)) ((dan thanh) or (dang thanh)) ban".
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - hanh trinh vat ((hang cong) OR (dang cong)) ((dan thanh) or (dang thanh)) ban*.