Perhaps you should try some spelling variations:
thuc van » thuc dan, thuc va, thuc hanh
hanh dai » hanh tai, hanh dao, vanh dai
su sach » so sach, vu sach
sach ty » sach y, sach tu, sach thu
xang xa » lang xa, mang xa, ang xa
hieu ve » hieu va, hieu van
cua tre » cua te, cuu tre, cua triet
ve dat » de dat, va dat, ve dao

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach ty xang xa hoi. hieu ve dat ((thuc van) or (thuc vat)) hanh dai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ty xang xa hoi. hieu ve dat ((thuc van) OR (thuc vat)) hanh dai cua tre.
• Adding a wildcard symbol may retrieve word variants: su sach ty xang xa hoi. hieu ve dat ((thuc van) or (thuc vat)) hanh dai cua tre*.