Perhaps you should try some spelling variations:
nghe nhan » nghe dan, nghe san
nghe nano » nghe dan, nghe san
va triet » va thiet, va trien, ve triet
danh dai » danh dau, danh di, danh sai
xa danh » va danh, dia danh, nam danh
thuc xa » thuc xay, tuc xa, thuc va
tu sach » thu sach, su sach, te sach
y nang » ky nang, ly nang, may nang
v nang » va nang, vu nang, van nang
dai va » mai va

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 nang) or (v nang)) x ho. hieu ((nghe nano) OR (nghe nhan)) thuc xa danh dai va triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ((y nang) OR (v nang)) x ho. hieu ((nghe nano) OR (nghe nhan)) thuc xa danh dai va triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ((y nang) or (v nang)) x ho. hieu ((nghe nano) OR (nghe nhan)) thuc xa danh dai va triet*".