Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
tieu sach » chieu sach, dien sach, viet sach
canh manh » lanh manh, canh tranh, cach mang
cua nhung » va nhung
manh toan » thanh toan, anh tuan, tinh toan
manh cua » doanh cua, ban cua
dan toan » van toan, dan than, xuan toan
te sach » toc sach

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((tieu sach) OR (te sach)) - canh manh cua nhung cong ((dan toan) or (manh toan)) tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((tieu sach) OR (te sach)) - canh manh cua nhung cong ((dan toan) OR (manh toan)) tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((tieu sach) OR (te sach)) - canh manh cua nhung cong ((dan toan) or (manh toan)) tap".
• Adding a wildcard symbol may retrieve word variants: theo ((tieu sach) OR (te sach)) - canh manh cua nhung cong ((dan toan) or (manh toan)) tap*.