Perhaps you should try some spelling variations:
nhung phuong » dung phuong, nhu phuong, truong phuong
thiet tach » chiet tach, thien hach, thuat tach
thanh tung » thanh cong
nhung cong » dung cong, thong cong, hang cong
ho thiet » hoc thiet, hoa thiet, so thiet
tung cua » trung cua, tuong cua, dung cua
van tai » von tai, van tuan
tai tap » bai tap, tai tao, hai tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho thiet tach - thanh tung cua ((nhung cong) or (nhung phuong)) van tai tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho thiet tach - thanh tung cua ((nhung cong) OR (nhung phuong)) van tai tap.
• Adding a wildcard symbol may retrieve word variants: ho thiet tach - thanh tung cua ((nhung cong) or (nhung phuong)) van tai tap*.