Perhaps you should try some spelling variations:
nhiem nghe » nghiep nghe, hiem ngheo
cua triet » cua viet, su triet, va triet
danh sai » dung sai, danh bat, danh dau
tu sach » thu sach, su sach, te sach
sach ty » sach y, sach tu, sach thu
ty nang » ky nang, ty xang, ty hang
va danh » va dinh, va dan, va hanh
cua tre » cua te, cuu tre, dua tren
ma hoi » mai hoi, xa hoi, me hoi
dan tu » danh tu, dan su, ban tu

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 ty nang ((ma hoi) or (ma hoa)). nhiem nghe dan tu va danh sai ((cua tre) or (cua triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ty nang ((ma hoi) OR (ma hoa)). nhiem nghe dan tu va danh sai ((cua tre) OR (cua triet)).
• Adding a wildcard symbol may retrieve word variants: tu sach ty nang ((ma hoi) or (ma hoa)). nhiem nghe dan tu va danh sai ((cua tre) or (cua triet))*.