Perhaps you should try some spelling variations:
hieu hien » bieu hien, dieu hien, chieu chien
dai trung » dai truong, tai trung, dac trung
trung va » truong va, trang va, trung ha
so sach » so sanh, bo sach, hoc sach
co sach » bo sach, cuon sach, hoc sach
ly nang » ky nang, ly hang, ly vang
va danh » va dinh, va dan, va hanh
danh vi » hanh vi, dinh vi, danh di
ma hoi » mai hoi, xa hoi, me hoi
vi cua » vai cua, di cua

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: ((so sach) OR (co sach)) ly nang ((ma hoi) OR (ma hoa)). hieu hien dai trung va danh vi cua vat~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((so sach) or (co sach)) ly nang ((ma hoi) OR (ma hoa)). hieu hien dai trung va danh vi cua vat~".
• Adding a wildcard symbol may retrieve word variants: ((so sach) or (co sach)) ly nang ((ma hoi) OR (ma hoa)). hieu hien dai trung va danh vi cua vat*.