Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
duong manh » duong van
cong manh » cong danh, cong thanh, hoang manh
ho chieu » theo chieu, hoc thieu, doi chieu
tranh va » tranh van, trang va, trinh va
toan tap » toan ban
va hang » van hang, 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 sach - canh tranh va hang ((cong manh) OR (duong manh)) toan tap~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu sach - canh tranh va hang ((cong manh) OR (duong manh)) toan tap".
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - canh tranh va hang ((cong manh) OR (duong manh)) toan tap*.