Perhaps you should try some spelling variations:
xa muong » ca muong, xa truong, o muong
so sach » so sanh, bo sach, co sach
doi cua » dai cua, hoi cua
xa dong » ha dong, van dong, lao dong
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) OR (xa dong)) 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) OR (xa dong)) 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) OR (xa dong)) doi cua tre*".