Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
doi chieu » doc hieu, doi chi, ho chieu
canh manh » canh tranh, cach mang, van manh
lanh manh » lanh tranh, lan anh, van manh
ban cong » bang cong, van cong, phan cong
cong tap » cuong tap, cong tac, cong tan
tap doan » tap quan
doan cau » toan cau, doan dau, doan cap

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi chieu sach - ((canh manh) or (lanh manh)) cua ban cong tap doan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sach - ((canh manh) OR (lanh manh)) cua ban cong tap doan cau.
• Adding a wildcard symbol may retrieve word variants: doi chieu sach - ((canh manh) or (lanh manh)) cua ban cong tap doan cau*.