Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
mot chieu » doi chieu, ho chieu
trinh cua » tinh cua, trinh luat, trinh quan
cua nhung » va nhung
doc hieu » toc thieu, hoc thieu, hoc hien
cong san » cong tac
toan cao » toan ban, toan tap

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ((mot chieu) or (doc hieu)) xanh - hanh trinh cua nhung ((huong dan) or (cong san)) toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((mot chieu) OR (doc hieu)) xanh - hanh trinh cua nhung ((huong dan) OR (cong san)) toan cao.
• Adding a wildcard symbol may retrieve word variants: ((mot chieu) or (doc hieu)) xanh - hanh trinh cua nhung ((huong dan) or (cong san)) toan cao*.