Perhaps you should try some spelling variations:
thien van » thi van
ban thanh » ban hang
nam thuc » nam thuoc, am thuc, nam thu
ban hanh » ban hang
so sach » so sanh, bo sach, co sach
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
cua tre » cua te, cuu tre, cua triet
ca cua » co cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: so sach ky nang xa hoi. thien van nam thuc ((ban thanh) OR (ban hanh)) ca cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach ky nang xa hoi. thien van nam thuc ((ban thanh) OR (ban hanh)) ca cua tre".
• Adding a wildcard symbol may retrieve word variants: so sach ky nang xa hoi. thien van nam thuc ((ban thanh) OR (ban hanh)) ca cua tre*.