Perhaps you should try some spelling variations:
toc sach » hoc sach, doc sach, thuoc sach
hanh vai » hanh vi, hanh va, hanh tai
vai cua » dai cua, hai cua, lai cua
truc va » thuc va, thuc vat, trung va
ty hang » ly hang, ty xang, thi hang
va lam » van lam, va lap
xuc va » duc va, tuc va, luc va
va hoi » xa hoi, va hoc, va hoa
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((te sach) OR (toc sach)) ty hang va hoi. lieu va lam ((xuc va) or (truc va)) hanh vai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sach) OR (toc sach)) ty hang va hoi. lieu va lam ((xuc va) OR (truc va)) hanh vai cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((te sach) OR (toc sach)) ty hang va hoi. lieu va lam ((xuc va) or (truc va)) hanh vai cua te".
• Adding a wildcard symbol may retrieve word variants: ((te sach) OR (toc sach)) ty hang va hoi. lieu va lam ((xuc va) or (truc va)) hanh vai cua te*.