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, hoc sach
co sach » bo sach, cuon sach, hoc sach
van cam » van nam, van lam, van dam
van cau » van dau, van hau, van chat
doi cuu » doi cua, doi cuoc
cuu tre » cua tre, cau tren, cau treo
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 (co sach)) ky nang x hoi. hieu ((van cam) or (van cau)) tuc xa muong doi cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((so sach) OR (co sach)) ky nang x hoi. hieu ((van cam) OR (van cau)) tuc xa muong doi cuu tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((so sach) OR (co sach)) ky nang x hoi. hieu ((van cam) or (van cau)) tuc xa muong doi cuu tre".
• Adding a wildcard symbol may retrieve word variants: ((so sach) OR (co sach)) ky nang x hoi. hieu ((van cam) or (van cau)) tuc xa muong doi cuu tre*.