Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
hieu nghe » lieu nghe, hiem ngheo, nhiem nghe
nghe nano » nghe dan, nghe san, nghe nhan
nano thuc » nang thuc, dan thuc, anh thuc
danh sai » dung sai, danh bat, danh dau
danh dai » danh dau, danh di, vanh dai
thuc xa » thuc xay, tuc xa, thuc va
tu sach » thu sach, su sach, te sach
v nang » va nang, vu nang, van nang
y nang » ky nang, ly nang, may nang

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 thuc xa ((danh dai) OR (danh sai)) cua 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 thuc xa ((danh dai) OR (danh sai)) cua 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 thuc xa ((danh dai) OR (danh sai)) cua triet".
• Adding a wildcard symbol may retrieve word variants: tu sach ((y nang) or (v nang)) x ho. hieu nghe nano thuc xa ((danh dai) OR (danh sai)) cua triet*.