Perhaps you should try some spelling variations:
duong manh » duong van
hieu xanh » chieu xanh, hieu manh, hieu nganh
canh manh » lanh manh, canh tranh, cach mang
cua nhung » va nhung
doc hieu » toc thieu, hoc thieu, hoc hien
manh cua » doanh cua, ban cua
cong tac » cong ty
toan tap » toan ban

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 nhung ((duong manh) or (((cong san) or (cong tac)))) toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc hieu xanh - canh manh cua nhung ((duong manh) OR (((cong san) OR (cong tac)))) toan tap.
• Adding a wildcard symbol may retrieve word variants: doc hieu xanh - canh manh cua nhung ((duong manh) or (((cong san) or (cong tac)))) toan tap*.