Perhaps you should try some spelling variations:
sach thuat » sach tham, dich thuat, cac thuat
thuat nang » thuat bang, thuat mang, thuat trang
toc sach » hoc sach, doc sach, thuoc sach
hanh vai » hanh vi, hanh va, hanh tai
nang xa » nang x, lang xa, nang ma
hieu va » lieu va, hieu qua
vai cua » dai cua, hai cua, lai cua
cua tre » cua te, cuu tre, cua triet
va cam » va cham, va cac, va cao
luc va » tuc va, loc va

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc sach thuat nang xa hoi. hieu va cam ((luc va) OR (duc va)) hanh vai cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc sach thuat nang xa hoi. hieu va cam ((luc va) OR (duc va)) hanh vai cua tre".
• Adding a wildcard symbol may retrieve word variants: toc sach thuat nang xa hoi. hieu va cam ((luc va) OR (duc va)) hanh vai cua tre*.