Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
nhung cong » dung cong, thong cong, hang cong
canh manh » canh tranh, cach mang, van manh
lanh manh » lanh tranh, lan anh, van manh
cua nhung » va nhung
thanh hai » thanh phan, thanh hoa
ho chieu » theo chieu, hoc thieu, doi chieu

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 manh) or (lanh manh)) cua nhung cong ((thanh hai) OR (thanh san)) hai~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - ((canh manh) OR (lanh manh)) cua nhung cong ((thanh hai) OR (thanh san)) hai.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho chieu sach - ((canh manh) or (lanh manh)) cua nhung cong ((thanh hai) OR (thanh san)) hai".
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - ((canh manh) or (lanh manh)) cua nhung cong ((thanh hai) OR (thanh san)) hai*.