Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
doi chieu » doi chi, ho chieu, mot chieu
doc hieu » toc thieu, hoc thieu, hoc hien
trinh va » trinh van, trinh vat, trinh ve
cong anh » cong danh, dong anh, cong thanh
hong anh » hoang anh, hong hanh, dong anh
tuan cao » toan cao, juan cao, quang cao
va nang » van nang, da nang, cam nang

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((doi chieu) or (doc hieu)) sach - hanh trinh va nang ((cong anh) OR (hong anh)) tuan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doi chieu) OR (doc hieu)) sach - hanh trinh va nang ((cong anh) OR (hong anh)) tuan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((doi chieu) or (doc hieu)) sach - hanh trinh va nang ((cong anh) OR (hong anh)) tuan cao".
• Adding a wildcard symbol may retrieve word variants: ((doi chieu) or (doc hieu)) sach - hanh trinh va nang ((cong anh) OR (hong anh)) tuan cao*.