Perhaps you should try some spelling variations:
toc sach » doc sach, thuoc sach, nuoc sach
dinh cuu » dinh chi
hoc sach » hoc sinh, hoc cac, hoc anh
dan dinh » dang dinh, doan dinh, van dinh
vu cham » va cham, vu kham, tu cham
ve cham » va cham, ve chat, ve chim
nang xa » nang x, lang xa, nang ma
cuu tre » cua tre, cau tren, cau treo
va dan » ca dan, va dao, va dau
y nang » ky nang, ly nang, v nang

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) or (hoc sach)) y nang xa hoi. hieu ((ve cham) or (vu cham)) duc va dan dinh cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((toc sach) OR (hoc sach)) y nang xa hoi. hieu ((ve cham) OR (vu cham)) duc va dan dinh cuu tre.
• Adding a wildcard symbol may retrieve word variants: ((toc sach) or (hoc sach)) y nang xa hoi. hieu ((ve cham) or (vu cham)) duc va dan dinh cuu tre*.