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