Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
mot chieu » ho chieu
doi chieu » doc hieu, doi chi, ho chieu
tong cong » trong cong, cong cong, dung cong
trinh vi » trinh va, trinh ve, trinh viet
cong dan » cong san, cong tan, huong dan
dan than » dan chan, ban than, van than
than cao » toan cao, thai cao, than cap
vi tong » va tong, bi tong, 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: ((mot chieu) or (doi chieu)) sach - hanh trinh vi tong cong dan than cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((mot chieu) OR (doi chieu)) sach - hanh trinh vi tong cong dan than cao*.