Perhaps you should try some spelling variations:
thien van » thi van
toc sach » hoc sach, doc sach, thuoc sach
hanh lai » hanh lam, hanh tai, thanh lap
lai cua » dai cua, hai cua, lai chau
va hanh » van hanh, va thanh, va danh
van cam » van nam, van lam, van cau
ly hang » ly quang
ty hang » ty xang, thi hang, thu hang
cua tre » cua te, cuu tre, cua triet
xuc va » duc va, tuc va, luc va

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) OR (ly hang)) xa hoi. thien van cam xuc va hanh lai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sach) OR (toc sach)) ((ty hang) OR (ly hang)) xa hoi. thien van cam xuc va hanh lai cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((te sach) or (toc sach)) ((ty hang) OR (ly hang)) xa hoi. thien van cam xuc va hanh lai cua tre*".