Perhaps you should try some spelling variations:
dinh kien » linh kien, dinh dien, dinh ket
doc sach » hoc sach, toc sach, nuoc sach
va thanh » gia thanh, ban thanh, va tinh
kien cua » khien cua, dien cua, tien cua
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
va tham » van tham, va cham, va thuat
thuc va » thuc vat, thuc dan, thuc day
va dinh » van dinh, va kinh, va tinh
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: doc sach ky nang xa hoi. hieu ((va tham) or (va thanh)) thuc va dinh kien cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc sach ky nang xa hoi. hieu ((va tham) OR (va thanh)) thuc va dinh kien cua tre.
• Adding a wildcard symbol may retrieve word variants: doc sach ky nang xa hoi. hieu ((va tham) or (va thanh)) thuc va dinh kien cua tre*.