Perhaps you should try some spelling variations:
trinh quan » tinh quang, trinh luat, trinh han
hanh trinh » canh tranh, hanh chinh
bien tinh » bi tinh, diep tinh, ban tinh
quan hang » quan hoang, quan lang, quan hanh
yen tinh » tuyen tinh
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: ho ((bien tinh) or (yen tinh)) - hanh trinh quan hang ((cong trinh) or (cong san)) toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((bien tinh) OR (yen tinh)) - hanh trinh quan hang ((cong trinh) OR (cong san)) toan ban.
• Adding a wildcard symbol may retrieve word variants: ho ((bien tinh) or (yen tinh)) - hanh trinh quan hang ((cong trinh) or (cong san)) toan ban*.