Perhaps you should try some spelling variations:
thuat mach » thuat sach, thuat tach, thuyet mach
hanh hinh » hanh chinh, hanh tinh, hanh dinh
hang nong » thang long, han tong
ho thuat » hoc thuat, ho thuan, khoi thuat
hinh cua » chinh cua, sinh cua, tinh cua
cua hang » cua dang, cua nhung, cua cong
dan than » dan chan, ban than, van than

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho thuat mach - hanh hinh cua hang nong ((dan than) or (tinh toan)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho thuat mach - hanh hinh cua hang nong ((dan than) OR (tinh toan)) cau.
• Adding a wildcard symbol may retrieve word variants: ho thuat mach - hanh hinh cua hang nong ((dan than) or (tinh toan)) cau*.