Perhaps you should try some spelling variations:
nang mai » nang ma, nang tai, lang mai
nghe nam » nghe lam, nghiep nam, nghe nano
mai hoi » mai khoi, dai hoi, lai hoi
thu nam » tu nam, thu nhap, thu nhat
nam dan » nam dinh
dan lai » dan loai, dan lap, dan lat
lai cua » dai cua, hai cua, lai chau
cua tre » cua te, cuu tre, cua triet
sac ky » cac ky, sai ky
he nam » ha nam

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: tu ((sach y) or (sac ky)) nang mai hoi. hieu ((he nam) or (nghe nam)) thu nam dan lai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sach y) OR (sac ky)) nang mai hoi. hieu ((he nam) OR (nghe nam)) thu nam dan lai cua tre.
• Adding a wildcard symbol may retrieve word variants: tu ((sach y) or (sac ky)) nang mai hoi. hieu ((he nam) or (nghe nam)) thu nam dan lai cua tre*.