Perhaps you should try some spelling variations:
hieu xanh » chieu xanh, hieu manh, hieu nganh
canh manh » lanh manh, canh tranh, cach mang
thanh cau » thanh chau, thanh mau, nhanh cau
doc hieu » toc thieu, hoc thieu, hoc hien
manh cua » doanh cua, ban cua
cong van » cong vang, song van, cong va
cong tan » cong tac, cong thanh, cong ty
cong san » cong tac

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 - canh manh cua cong ((((cong van) OR (cong tan))) or (cong san)) thanh cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc hieu xanh - canh manh cua cong ((((cong van) OR (cong tan))) OR (cong san)) thanh cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc hieu xanh - canh manh cua cong ((((cong van) OR (cong tan))) or (cong san)) thanh cau".
• Adding a wildcard symbol may retrieve word variants: doc hieu xanh - canh manh cua cong ((((cong van) OR (cong tan))) or (cong san)) thanh cau*.