Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
vu kham » vu khanh
anh dai » vanh dai, anh bai, anh dat
van anh » van thanh, tuan anh, van minh
hoc van » hoc dan, hoc va, hoc vat
vu cham » va cham, tu cham, qua cham
mang xa » lang xa, mang may, dang xay
xang xa » lang xa, ang xa, dang xay
cua tre » cua te, cuu tre, cua triet

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu sach y ((xang xa) or (mang xa)) hoi. hieu ((vu cham) or (vu kham)) hoc van anh dai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach y ((xang xa) OR (mang xa)) hoi. hieu ((vu cham) OR (vu kham)) hoc van anh dai cua tre.
• Adding a wildcard symbol may retrieve word variants: thu sach y ((xang xa) or (mang xa)) hoi. hieu ((vu cham) or (vu kham)) hoc van anh dai cua tre*.