Perhaps you should try some spelling variations:
chieu sach » chiet tach, chieu sang, chieu xanh
hanh tranh » canh tranh, hanh trinh, hanh trang
duong manh » duong van
tranh cua » doanh cua, manh cua
duong anh » duong xanh, duong vanh, dong anh
cua dang » cua cong, cua ban
tuan cu » tuan tu, quan cua, tuan thu

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) OR (chinh sach)) - hanh tranh cua dang ((duong anh) or (duong manh)) tuan cu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu sach) OR (chinh sach)) - hanh tranh cua dang ((duong anh) OR (duong manh)) tuan cu.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chieu sach) OR (chinh sach)) - hanh tranh cua dang ((duong anh) or (duong manh)) tuan cu".
• Adding a wildcard symbol may retrieve word variants: ho ((chieu sach) OR (chinh sach)) - hanh tranh cua dang ((duong anh) or (duong manh)) tuan cu*.