Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
so sach » bo sach, co sach, hoc sach
tinh di » tinh doi, trinh di, tinh da
va tinh » may tinh
lam tuc » lam thuoc, lam truoc, luat tuc
van lam » van nam
son hai » cong hai
so sanh » do sanh
so hai » su hai, so ha, co hai
y nang » ky nang, ly nang, v nang
tuc va » thuc va, truc va, tuc xa
di cua » dai cua, doi cua, de cua
cua te » cua tu

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 (so sanh)) y nang ((so hai) OR (son hai)). hieu van lam tuc va tinh di cua te~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((so sach) or (so sanh)) y nang ((so hai) OR (son hai)). hieu van lam tuc va tinh di cua te~".
• Adding a wildcard symbol may retrieve word variants: ((so sach) or (so sanh)) y nang ((so hai) OR (son hai)). hieu van lam tuc va tinh di cua te*.