Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
thuoc sach » hoc sach, nuoc sach, thuat sach
tranh cua » doanh cua, manh cua
cua nhung » va nhung
toc sach » hoc sach, doc sach, nuoc sach
cong van » cong vang, cong san, song van
van toan » van tuan, van tan, van thanh
toan ban » van ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((toc sach) OR (thuoc sach)) - canh tranh cua nhung cong van toan ban~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((toc sach) OR (thuoc sach)) - canh tranh cua nhung cong van toan ban".
• Adding a wildcard symbol may retrieve word variants: theo ((toc sach) OR (thuoc sach)) - canh tranh cua nhung cong van toan ban*.