Perhaps you should try some spelling variations:
hanh lai » hanh lam, hanh tai, thanh lap
cao khoa » lao khoa, bao khoa, cac khoa
te sach » toc sach
ve chat » va chat, van chat
lai cua » dai cua, hai cua, lai chau
cao hoa » cao hoat, cau hoa, cao hoc
hieu ve » hieu va, hieu van
y nang » ky nang, ly nang, v nang
luc va » duc va, tuc va, loc va
cua tu » cua tuc, cua su, cua cu
ac va » tac va, bac va, mac va

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: te sach y nang ((cao hoa) OR (cao khoa)). hieu ve chat ((ac va) OR (luc va)) hanh lai cua tu~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach y nang ((cao hoa) OR (cao khoa)). hieu ve chat ((ac va) or (luc va)) hanh lai cua tu~".
• Adding a wildcard symbol may retrieve word variants: te sach y nang ((cao hoa) OR (cao khoa)). hieu ve chat ((ac va) or (luc va)) hanh lai cua tu*.