Perhaps you should try some spelling variations:
hieu nghe » lieu nghe, hiem ngheo, nhiem nghe
nghe nano » nghe dan, nghe san, nghe nhan
nano thuc » nang thuc, dan thuc, anh thuc
cua triet » cua viet, su triet
danh dai » danh dau, danh di, danh sai
va triet » va thiet, va trien, ve triet
su sach » so sach, vu sach
thuc xa » thuc xay, tuc xa, thuc va
xa danh » va danh, dia danh, nam danh
y nang » ky nang, ly nang, may nang
v nang » va nang, vu nang, van nang

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach ((y nang) or (v nang)) x ho. hieu nghe nano thuc xa danh dai ((cua triet) OR (va triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ((y nang) OR (v nang)) x ho. hieu nghe nano thuc xa danh dai ((cua triet) OR (va triet)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ((y nang) or (v nang)) x ho. hieu nghe nano thuc xa danh dai ((cua triet) OR (va triet))".
• Adding a wildcard symbol may retrieve word variants: su sach ((y nang) or (v nang)) x ho. hieu nghe nano thuc xa danh dai ((cua triet) OR (va triet))*.