Perhaps you should try some spelling variations:
dinh dai » dinh dat, sinh dai, dinh dao
toc sach » hoc sach, doc sach, thuoc sach
ve cham » va cham, ve chat, vu cham
hieu ve » hieu va, hieu van
cua tre » cua te, cuu tre, cua triet
xuc va » duc va, tuc va, xac va
luc va » duc va, tuc va, loc va
y nang » ky nang, ly nang, v nang
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: ((te sach) OR (toc sach)) y nang x hoi. hieu ve cham ((xuc va) or (luc va)) dinh dai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sach) OR (toc sach)) y nang x hoi. hieu ve cham ((xuc va) OR (luc va)) dinh dai cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((te sach) OR (toc sach)) y nang x hoi. hieu ve cham ((xuc va) or (luc va)) dinh dai cua tre*".