Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
sang tao » hang tai
danh bat » doanh bat, anh bai, dinh ba
danh sai » dung sai, danh dau, hanh san
sach ky » sac ky, sach y, sach ty
tu sach » thu sach, su sach, te sach
nang ma » tang ma, sang ma, nang cao
hieu he » hieu ve, hiem he, hieu le
he nam » ha nam, nghe nam

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 ((sang tao) or (nang ma)) hoi. hieu he nam thu xe ((danh sai) or (danh bat)) cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky ((sang tao) OR (nang ma)) hoi. hieu he nam thu xe ((danh sai) OR (danh bat)) cua triet.
• Adding a wildcard symbol may retrieve word variants: tu sach ky ((sang tao) or (nang ma)) hoi. hieu he nam thu xe ((danh sai) or (danh bat)) cua triet*.