Perhaps you should try some spelling variations:
nhung thong » chung thong, nhung chong, nhung phong
thuat mach » thuat sach, thuat tach, thuyet mach
hanh tranh » hanh trinh, hanh trang, lanh tranh
hoa thuat » hoc thuat, hoa thuan, khoi thuat
cua nhung » va nhung
quan tan » quan tai, quai tan, xuan tan
quan van » luan van, quan va, quan luan

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoa thuat mach - ((hanh tranh) or (canh tranh)) cua nhung thong ((quan tan) OR (quan van)) ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoa thuat mach - ((hanh tranh) OR (canh tranh)) cua nhung thong ((quan tan) OR (quan van)) ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoa thuat mach - ((hanh tranh) or (canh tranh)) cua nhung thong ((quan tan) OR (quan van)) ban".
• Adding a wildcard symbol may retrieve word variants: hoa thuat mach - ((hanh tranh) or (canh tranh)) cua nhung thong ((quan tan) OR (quan van)) ban*.