Perhaps you should try some spelling variations:
muong doi » huong doi, duong doi, mong doi
xa muong » ca muong, xa truong, xa dong
so sach » so sanh, co sach, hoc sach
doi cua » dai cua, hoi cua
va cham » va chat, va tham
cua tre » cua te, cuu tre, cua triet
ty nang » ky nang, ty xang, ty hang
bo sach » co sach, hoc sach
va cai » va cac, va bai, va dai
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) OR (bo sach)) ty nang x hoi. hieu ((va cai) or (va cham)) tuc xa muong doi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((so sach) OR (bo sach)) ty nang x hoi. hieu ((va cai) OR (va cham)) tuc xa muong doi cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((so sach) OR (bo sach)) ty nang x hoi. hieu ((va cai) or (va cham)) tuc xa muong doi cua tre".
• Adding a wildcard symbol may retrieve word variants: ((so sach) OR (bo sach)) ty nang x hoi. hieu ((va cai) or (va cham)) tuc xa muong doi cua tre*.