Perhaps you should try some spelling variations:
muong doi » huong doi, mong doi, tuong doi
duong doi » duong loi, dung doi, huong doi
so sach » so sanh, bo sach, co sach
va cham » va chat, va tham
sach ky » sac ky, sach y, sach ty
cua tre » cua te, cuu tre, cua triet
va cam » va cac, va cao, va cai
x hoi » xa hoi, o hoi, x ho

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 x hoi. hieu ((va cam) or (va cham)) tuc xa ((muong doi) OR (duong doi)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach ky nang x hoi. hieu ((va cam) OR (va cham)) tuc xa ((muong doi) OR (duong doi)) cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach ky nang x hoi. hieu ((va cam) or (va cham)) tuc xa ((muong doi) OR (duong doi)) cua tre".
• Adding a wildcard symbol may retrieve word variants: so sach ky nang x hoi. hieu ((va cam) or (va cham)) tuc xa ((muong doi) OR (duong doi)) cua tre*.