Perhaps you should try some spelling variations:
hieu hien » bieu hien, dieu hien, chieu chien
dai truc » dai thuc, doan truc, dai trung
va danh » va dinh, va hanh, dia danh
so sach » so sanh, co sach, hoc sach
nang ma » tang ma, sang ma, nang cao
ly nang » ky nang, ly hang, ly vang
bo sach » co sach, hoc sach
va dan » ca dan, va dao, va dau
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 (bo sach)) ly nang ma hoa. hieu hien dai truc ((va danh) OR (va dan)) vi cua vat~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((so sach) or (bo sach)) ly nang ma hoa. hieu hien dai truc ((va danh) OR (va dan)) vi cua vat~".
• Adding a wildcard symbol may retrieve word variants: ((so sach) or (bo sach)) ly nang ma hoa. hieu hien dai truc ((va danh) OR (va dan)) vi cua vat*.