Perhaps you should try some spelling variations:
thu sach » thuat sach, thuoc sach, thu hoach
hanh vai » hanh vi, hanh va, hanh tai
hieu van » hieu va, thien van, lieu va
ly nang » ky nang, ly hang, ly vang
tu sach » su sach, te sach, tu cach
van cam » van nam, van lam, van cau
vai cua » dai cua, hai cua, lai cua
cua tre » cua te, cuu tre, cua triet
tuc va » thuc va, truc va, tuc xa
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((thu sach) OR (tu sach)) ly nang x hoi. hieu van cam ((tuc va) or (duc va)) hanh vai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thu sach) OR (tu sach)) ly nang x hoi. hieu van cam ((tuc va) OR (duc va)) hanh vai cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((thu sach) OR (tu sach)) ly nang x hoi. hieu van cam ((tuc va) or (duc va)) hanh vai cua tre*".