Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
hanh tranh » canh tranh, hanh trang, lanh tranh
hieu xanh » chieu xanh, hieu manh, hieu nganh
cua trong » cua truong, cua trung, qua trong
doc hieu » toc thieu, hoc thieu, hoc hien
cong san » cong tac
san toan » van toan, dan toan, manh toan
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 - ((hanh tranh) or (hanh trinh)) cua trong cong san toan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc hieu xanh - ((hanh tranh) OR (hanh trinh)) cua trong cong san toan tap.
• Adding a wildcard symbol may retrieve word variants: doc hieu xanh - ((hanh tranh) or (hanh trinh)) cua trong cong san toan tap*.