Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
quan nhung » qua nhung, luan chung, quang hung
thi chieu » thi chien, thi hieu, theo chieu
cua nhung » va nhung
ho chieu » theo chieu, hoc thieu, doi chieu
cong dan » cong san, cong tan, huong dan
dan than » dan chan, ban than, van than
than cao » toan cao, thai cao, than cap

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((ho chieu) or (thi chieu)) xanh - hanh trinh ((quan nhung) OR (cua nhung)) cong dan than cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (thi chieu)) xanh - hanh trinh ((quan nhung) OR (cua nhung)) cong dan than cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chieu) or (thi chieu)) xanh - hanh trinh ((quan nhung) OR (cua nhung)) cong dan than cao".
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) or (thi chieu)) xanh - hanh trinh ((quan nhung) OR (cua nhung)) cong dan than cao*.