Perhaps you should try some spelling variations:
nhung phong » nhung phuong, nhung chong, nung phong
chieu sang » chieu sach, chieu xanh, hieu lang
hanh tranh » canh tranh, hanh trang, lanh tranh
hanh trinh » canh tranh, hanh chinh
nhung hong » nhung chong, nhung huong, nhung cong
doc chieu » doc hieu, doi chieu, toc thieu
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: doc chieu sang - ((hanh tranh) OR (hanh trinh)) cua ((nhung hong) or (nhung phong)) van toan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc chieu sang - ((hanh tranh) OR (hanh trinh)) cua ((nhung hong) OR (nhung phong)) van toan ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc chieu sang - ((hanh tranh) OR (hanh trinh)) cua ((nhung hong) or (nhung phong)) van toan ban".
• Adding a wildcard symbol may retrieve word variants: doc chieu sang - ((hanh tranh) OR (hanh trinh)) cua ((nhung hong) or (nhung phong)) van toan ban*.