Perhaps you should try some spelling variations:
tu sach » thu sach, su sach, te sach
sach ly » sach y, sach lo, sach ty
ly nang » ky nang, ly hang, ly vang
nang xa » nang x, lang xa, nang ma
va cham » va chat, va tham
thuc va » thuc vat, thuc dan, thuc day
dau dai » dat dai, sau dai, dau da
cua tre » cua te, cuu tre, cua triet
va cao » va cac, va co, va dao
va dau » va dao

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach ly nang xa hoi. hieu ((va cham) or (va cao)) thuc va dau dai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ly nang xa hoi. hieu ((va cham) OR (va cao)) thuc va dau dai cua tre.
• Adding a wildcard symbol may retrieve word variants: tu sach ly nang xa hoi. hieu ((va cham) or (va cao)) thuc va dau dai cua tre*.