Perhaps you should try some spelling variations:
thien van » thi van
toc sach » hoc sach, doc sach, thuoc sach
hanh vai » hanh vi, hanh va, hanh tai
dang mat » dang vat, dang mau, dung mat
truc va » thuc va, thuc vat, trung va
vai cua » dai cua, hai cua, lai cua
mat hoa » ma hoa, mai hoa, chat hoa
cua tre » cua te, cuu tre, cua triet
xuc va » duc va, tuc va, luc va
y dang » ky dang, 2 dang, _ dang

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)) y dang mat hoa. thien van nam ((xuc va) or (truc va)) hanh vai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sach) OR (toc sach)) y dang mat hoa. thien van nam ((xuc va) OR (truc va)) hanh vai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((te sach) OR (toc sach)) y dang mat hoa. thien van nam ((xuc va) or (truc va)) hanh vai cua tre".
• Adding a wildcard symbol may retrieve word variants: ((te sach) OR (toc sach)) y dang mat hoa. thien van nam ((xuc va) or (truc va)) hanh vai cua tre*.