Perhaps you should try some spelling variations:
toc sach » hoc sach, doc sach, thuoc sach
cham xuc » cam xuc, chat xuc, pham duc
hanh va » hang va, hanh vi
va hanh » van hanh, va thanh, va danh
hieu ve » hieu va, hieu van
lang ha » long ha
ly lang » ly hang, ly vang, le lang
cua tre » cua te, cuu tre, cua triet
ha hoi » hoa hoi, ha noi, xa hoi
va cua » va chua, via cua, ca 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: ((te sach) OR (toc sach)) ly lang ha hoi. hieu ve ((cham xuc) OR (cham soc)) va hanh va cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((te sach) OR (toc sach)) ly lang ha hoi. hieu ve ((cham xuc) or (cham soc)) va hanh va cua tre~".
• Adding a wildcard symbol may retrieve word variants: ((te sach) OR (toc sach)) ly lang ha hoi. hieu ve ((cham xuc) or (cham soc)) va hanh va cua tre*.