Perhaps you should try some spelling variations:
xa muong » ca muong, xa truong, o muong
so sach » so sanh, bo sach, co sach
sach ky » sac ky, sach y, sach ty
cao hoi » cau hoi, co hoi, cao hoc
cam tuc » cam xuc, cam tu, nam thuc
xa dong » ha dong, lao dong
cua tre » cua te, cuu tre, cua triet
va cam » va cham, va cac, va cao

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 cao hoi. lieu va cam tuc ((xa muong) or (((xa dong) OR (van dong)))) dai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach ky nang cao hoi. lieu va cam tuc ((xa muong) OR (((xa dong) OR (van dong)))) dai cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach ky nang cao hoi. lieu va cam tuc ((xa muong) or (((xa dong) OR (van dong)))) dai cua tre*".