Perhaps you should try some spelling variations:
thanh trung » thanh tung
hoan chinh » hanh chinh, hoa hinh
hoc chinh » hoc sinh, hoc kinh
hoa nhung » hoc nhung, hon nhung, va nhung
ha nhung » hay nhung, pha nhung, va nhung
cong san » cong tac
san van » tan van, luan van, tran van
van cau » van dau, van hau, van chat

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 chinh) OR (hoan chinh)) sach - thanh trung ((ha nhung) OR (hoa nhung)) cong san van cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((hoc chinh) or (hoan chinh)) sach - thanh trung ((ha nhung) OR (hoa nhung)) cong san van cau~".
• Adding a wildcard symbol may retrieve word variants: ((hoc chinh) or (hoan chinh)) sach - thanh trung ((ha nhung) OR (hoa nhung)) cong san van cau*.