Perhaps you should try some spelling variations:
trong doanh » trong nganh
hanh trang » thanh trung, canh tranh, hanh trinh
trang cua » tranh cua, tang cua, trung cua
cua nhung » va nhung
cong doan » cong dan, cong hoan, dong doanh
co sach » bo sach, cuon sach, hoc sach
doi co » doi bo, moi co, hoi co

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi co sach - hanh trang cua nhung ((cong doan) or (trong doanh)) van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi co sach - hanh trang cua nhung ((cong doan) OR (trong doanh)) van ban.
• Adding a wildcard symbol may retrieve word variants: doi co sach - hanh trang cua nhung ((cong doan) or (trong doanh)) van ban*.