Perhaps you should try some spelling variations:
toc sach » hoc sach, doc sach, thuoc sach
hieu van » hieu va, thien van, lieu va
nang xa » nang x, lang xa, nang ma
van hau » van ha, van hai, van dau
hau luc » hau loc, cau luc, nhan luc
van anh » van thanh, tuan anh
cua tre » cuu tre, cua triet, dua tren
sach v » sach va, sach y, sach 2
v nang » va nang, vu nang, van nang
cua te » cua tu

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 v nang xa hoi. hieu van hau luc ((van anh) or (van minh)) le ((cua tre) or (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc sach v nang xa hoi. hieu van hau luc ((van anh) OR (van minh)) le ((cua tre) OR (cua te)).
• Adding a wildcard symbol may retrieve word variants: toc sach v nang xa hoi. hieu van hau luc ((van anh) or (van minh)) le ((cua tre) or (cua te))*.