Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
hanh trang » thanh trung, canh tranh, hanh trinh
trang cua » tranh cua, tang cua, trung cua
cua nhung » va nhung
cau sach » cao sach, hau sach, rau sach
cong tan » cong tac, cong thanh, cong ty
cong san » cong tac
toan cao » toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: chao ((chieu sach) or (cau sach)) - hanh trang cua nhung ((cong tan) OR (cong san)) toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: chao ((chieu sach) OR (cau sach)) - hanh trang cua nhung ((cong tan) OR (cong san)) toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "chao ((chieu sach) or (cau sach)) - hanh trang cua nhung ((cong tan) OR (cong san)) toan cao".
• Adding a wildcard symbol may retrieve word variants: chao ((chieu sach) or (cau sach)) - hanh trang cua nhung ((cong tan) OR (cong san)) toan cao*.