Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
trinh quan » tinh quang, trinh luat, trinh han
quan trong » gian trong
mot chieu » doi chieu, ho chieu
cong dan » cong tan, huong dan, cong dong
cong san » cong tac
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: ((toc thieu) or (mot chieu)) xanh - hanh trinh quan trong ((cong dan) OR (cong san)) toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((toc thieu) OR (mot chieu)) xanh - hanh trinh quan trong ((cong dan) OR (cong san)) toan ban*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((toc thieu) or (mot chieu)) xanh - hanh trinh quan trong ((cong dan) OR (cong san)) toan ban*".