Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
thuc day » thuc dan, thuc vat
thanh do » thanh de, thanh pho, thanh hoa
tu sach » thu sach, su sach, te sach
nang xa » nang x, lang xa, nang ma
va cham » va chat, va tham
cua tre » cua te, cuu tre, cua triet
y nang » ky nang, ly nang, v nang
do cua » doi cua, co cua, de cua

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) or (thuoc sach)) y nang xa hoi. lieu va cham ((tuc xa) or (thuc day)) thanh do cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (thuoc sach)) y nang xa hoi. lieu va cham ((tuc xa) OR (thuc day)) thanh do cua tre.
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (thuoc sach)) y nang xa hoi. lieu va cham ((tuc xa) or (thuc day)) thanh do cua tre*.