Perhaps you should try some spelling variations:
chieu tinh » trieu tinh, lieu tinh, chau tinh
hanh trinh » canh tranh
dung cong » dung trong
tranh ban » trinh ban, tranh hang, tranh luan
ho chieu » theo chieu, hoc thieu, doi chieu
cong tan » cong tac, cong san, cong thanh
toan ban » van ban
vi dung » va dung, vi ung, vi dong

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 tinh - ((hanh trinh) or (hanh chinh)) vi dung cong tan ((toan ban) or (tranh ban))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu tinh - ((hanh trinh) OR (hanh chinh)) vi dung cong tan ((toan ban) OR (tranh ban)).
• Adding a wildcard symbol may retrieve word variants: ho chieu tinh - ((hanh trinh) or (hanh chinh)) vi dung cong tan ((toan ban) or (tranh ban))*.