Perhaps you should try some spelling variations:
chuan khong » chu khong, chuan chon, chuan long
trinh chuan » trinh han, trinh quan, trinh luan
hanh trinh » canh tranh, hanh chinh
ho chieu » theo chieu, hoc thieu, doi chieu
theo chu » theo chieu, cho chu, chao chu
cong tan » cong tac, cong san, cong thanh
than cap » khan cap, thanh lap, thanh cac

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 (theo chu)) xanh - hanh trinh chuan khong ((cong tan) or (huong dan)) than cap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (theo chu)) xanh - hanh trinh chuan khong ((cong tan) OR (huong dan)) than cap.
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) or (theo chu)) xanh - hanh trinh chuan khong ((cong tan) or (huong dan)) than cap*.