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

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

• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ly nang xa hoi. hieu ((va chat) OR (va cao)) thuc va ((dau dai) OR (sau dai)) cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ly nang xa hoi. hieu ((va chat) or (va cao)) thuc va ((dau dai) OR (sau dai)) cua tre~".
• Adding a wildcard symbol may retrieve word variants: tu sach ly nang xa hoi. hieu ((va chat) or (va cao)) thuc va ((dau dai) OR (sau dai)) cua tre*.