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, bo sach, co sach
sach ty » sach y, sach tu, sach thu
cua tre » cua te, cua triet, dua tren
va cham » va chat, va tham
ty nang » ky nang, ty xang, ty hang
cuu tre » cau tren, cau treo
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 ty nang x hoi. hieu ((va cai) or (va cham)) tuc xa muong doi ((cua tre) OR (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach ty nang x hoi. hieu ((va cai) OR (va cham)) tuc xa muong doi ((cua tre) OR (cuu tre)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach ty nang x hoi. hieu ((va cai) or (va cham)) tuc xa muong doi ((cua tre) OR (cuu tre))".
• Adding a wildcard symbol may retrieve word variants: so sach ty nang x hoi. hieu ((va cai) or (va cham)) tuc xa muong doi ((cua tre) OR (cuu tre))*.