Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
viet cua » viec cua, viet ca, viet qua
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
van anh » van thanh, tuan anh, van minh
cua tre » cua te, cuu tre, cua triet
ve cac » vien cac
lo van » le van, vo van, so van

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 nang xa hoi. hieu ((ve cac) OR (va cac)) lo van anh viet cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuoc sach ky nang xa hoi. hieu ((ve cac) OR (va cac)) lo van anh viet cua tre".
• Adding a wildcard symbol may retrieve word variants: thuoc sach ky nang xa hoi. hieu ((ve cac) OR (va cac)) lo van anh viet cua tre*.