Perhaps you should try some spelling variations:
nhung huong » nhung phuong, nhung tuong, nhung cong
thanh trung » thanh tung
thiet tach » chiet tach, thien hach, thuat tach
thu phuong » thi phuong, thu huong, theo phuong
hoc thiet » hoc thieu, hoc thuyet, hoc hien
trung cua » truong cua, trung tuan, trung cap
dan than » dan chan, van than, dan toan
ban than » ban thanh, van thanh, ban hang

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

• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thiet tach - thanh trung cua ((nhung huong) OR (thu phuong)) ((dan than) OR (ban than)) cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thiet tach - thanh trung cua ((nhung huong) or (thu phuong)) ((dan than) OR (ban than)) cau~".
• Adding a wildcard symbol may retrieve word variants: hoc thiet tach - thanh trung cua ((nhung huong) or (thu phuong)) ((dan than) OR (ban than)) cau*.