Perhaps you should try some spelling variations:
nghe nam » nghe lam, nghiep nam, nghe nano
danh sai » danh bat, danh dau, hanh san
dung sai » dung tai, dung va, dung dat
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
nang ma » tang ma, sang ma, nang cao
cuu tre » cua tre, cau tren, cau treo
ma hoi » mai hoi, xa hoi, ma hoa
he nam » ha nam
thu xa » thu xac, thu ha, thu xe

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 ky nang ma hoi. hieu ((he nam) or (nghe nam)) thu xa ((danh sai) OR (dung sai)) cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky nang ma hoi. hieu ((he nam) OR (nghe nam)) thu xa ((danh sai) OR (dung sai)) cuu tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ky nang ma hoi. hieu ((he nam) or (nghe nam)) thu xa ((danh sai) OR (dung sai)) cuu tre".
• Adding a wildcard symbol may retrieve word variants: tu sach ky nang ma hoi. hieu ((he nam) or (nghe nam)) thu xa ((danh sai) OR (dung sai)) cuu tre*.