Perhaps you should try some spelling variations:
thuat tach » thuat sach, thuat mach, thuat tac
thanh tung » thanh cong
tam huong » tam thuong, tay huong, tam duong
so thuat » hoc thuat, ky thuat, ki thuat
tam hung » cam hung, tai hung, ham hung
bai than » ban than, bay than, tai thanh
bai toan » bai tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: so thuat tach - thanh tung ((tam hung) or (tam huong)) cuong ((bai than) or (bai toan)) cap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so thuat tach - thanh tung ((tam hung) OR (tam huong)) cuong ((bai than) OR (bai toan)) cap.
• Adding a wildcard symbol may retrieve word variants: so thuat tach - thanh tung ((tam hung) or (tam huong)) cuong ((bai than) or (bai toan)) cap*.