Perhaps you should try some spelling variations:
nhung huong » nhung phuong, nhung tuong, nhung cong
nhung duong » nhung dung, nhung tuong, chuong duong
theo chieu » theo tieu, theo chu, thi chieu
hanh trinh » canh tranh, hanh chinh
trinh vat » trinh van, trinh luat, sinh vat
ho chieu » hoc thieu, doi chieu, mot chieu
van nang » van quang, van ban, van 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) or (theo chieu)) sach - hanh trinh vat ((nhung duong) OR (nhung huong)) van nang cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (theo chieu)) sach - hanh trinh vat ((nhung duong) OR (nhung huong)) van nang cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chieu) or (theo chieu)) sach - hanh trinh vat ((nhung duong) OR (nhung huong)) van nang cao".
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) or (theo chieu)) sach - hanh trinh vat ((nhung duong) OR (nhung huong)) van nang cao*.