Perhaps you should try some spelling variations:
chiet tach » chieu sach
hanh trinh » canh tranh, hanh chinh
hieu manh » chieu xanh, hieu nganh, dieu hanh
hiem ngan » kim ngan, viem gan
trinh cua » tinh cua, trinh luat, trinh quan
dung cong » dung trong
cua dung » cua dang, cua dong, qua dung
cong tan » cong tac, cong san, cong thanh
tan van » tran van, tang van, luan van

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho ((((hieu manh) or (hiem ngan))) or (chiet tach)) - hanh trinh cua dung cong tan van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((((hieu manh) OR (hiem ngan))) OR (chiet tach)) - hanh trinh cua dung cong tan van ban.
• Adding a wildcard symbol may retrieve word variants: ho ((((hieu manh) or (hiem ngan))) or (chiet tach)) - hanh trinh cua dung cong tan van ban*.