Perhaps you should try some spelling variations:
hanh via » hanh vi, hanh va, anh va
so sach » so sanh, bo sach, co sach
sach ky » sac ky, sach y, sach ty
va hanh » van hanh, va thanh, va danh
via cua » gia cua, gian cua, giau cua
cua tre » cua te, cuu tre, cua triet
ma hoi » mai hoi, xa hoi, me hoi
va bao » va bai
bao bo » bac bo, ban bo, nao bo
bo va » bao va, do va, so va

You may be able to get more results by adjusting your search query.

• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach ky nang ((ma hoi) OR (ma hoa)). lieu va bao bo va hanh via cua tre~".
• Adding a wildcard symbol may retrieve word variants: so sach ky nang ((ma hoi) OR (ma hoa)). lieu va bao bo va hanh via cua tre*.