Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
hieu van » hieu va, thien van, lieu va
sach ky » sac ky, sach y, sach ty
ky dang » ky nang, ky danh
dang xa » dang xay, lang xa, dang ha
van cam » van nam, van lam, van cau
va dinh » van dinh, va kinh, va tinh
cuu tre » cua tre, cau tren, cau treo
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: thuoc sach ky dang xa hoi. hieu van cam xuc ((va dinh) or (gia thanh)) tai ((cuu tre) or (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuoc sach ky dang xa hoi. hieu van cam xuc ((va dinh) OR (gia thanh)) tai ((cuu tre) OR (cua te)).
• Adding a wildcard symbol may retrieve word variants: thuoc sach ky dang xa hoi. hieu van cam xuc ((va dinh) or (gia thanh)) tai ((cuu tre) or (cua te))*.