Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
cong luong » cong thuong, nang luong, cong dong
doi chieu » doc hieu, doi chi, mot chieu
cong tuan » cong tan, cong luan, cong thanh
ho chieu » theo chieu, hoc thieu, mot chieu
trinh va » trinh van, trinh vat, trinh ve
phan lap » phan dau
va dang » van dang, va nang, va lang

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 (doi chieu)) sach - hanh trinh va dang ((cong luong) or (cong tuan)) phan lap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (doi chieu)) sach - hanh trinh va dang ((cong luong) OR (cong tuan)) phan lap.
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) or (doi chieu)) sach - hanh trinh va dang ((cong luong) or (cong tuan)) phan lap*.