Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
doi chieu » doc hieu, doi chi, mot chieu
trinh vai » trinh van, trinh tai, trinh vat
vai nhung » va nhung, voi nhung, vap nhung
duong van » duong va, luong va, trong van
ho chieu » theo chieu, hoc thieu, mot chieu
dang van » hoang van, hang va

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 vai nhung ((duong van) or (dang van)) nang cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (doi chieu)) sach - hanh trinh vai nhung ((duong van) OR (dang van)) nang cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chieu) OR (doi chieu)) sach - hanh trinh vai nhung ((duong van) or (dang van)) nang cao".
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) OR (doi chieu)) sach - hanh trinh vai nhung ((duong van) or (dang van)) nang cao*.