Perhaps you should try some spelling variations:
nghe nam » nghe lam, nghiep nam, nghe nano
day danh » day manh, dai danh, dao danh
thuc day » thuc dan, thuc vat
sach ky » sac ky, sach y, sach ty
vai cua » dai cua, hai cua, lai cua
tu sach » thu sach, su sach, te sach
ve nam » he nam, va nam, le nam
vai ca » vai cac, bai ca, vai va
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: tu sach ky nang x hoi. hieu ((ve nam) or (nghe nam)) thuc day danh ((vai ca) OR (vai cua)) viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky nang x hoi. hieu ((ve nam) OR (nghe nam)) thuc day danh ((vai ca) OR (vai cua)) viet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ky nang x hoi. hieu ((ve nam) or (nghe nam)) thuc day danh ((vai ca) OR (vai cua)) viet*".