Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
nghe nam » nghe lam, nghiep nam, nghe nano
vat dung » van dung, viet dung, mat duong
sai cua » dai cua, hai cua, lai cua
va dung » van dung, va duong, va ung
te sach » toc sach
sach ky » sac ky, sach y, sach ty
sang ma » tang ma, nang ma, sang tao
ky sang » ky nang, ky dang, ky tang
he nam » ha nam
ma hoi » mai hoi, xa hoi, ma hoa

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach ky sang ma hoi. hieu ((he nam) OR (nghe nam)) thu ((va dung) or (vat dung)) sai cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky sang ma hoi. hieu ((he nam) OR (nghe nam)) thu ((va dung) OR (vat dung)) sai cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky sang ma hoi. hieu ((he nam) OR (nghe nam)) thu ((va dung) or (vat dung)) sai cua triet".
• Adding a wildcard symbol may retrieve word variants: te sach ky sang ma hoi. hieu ((he nam) OR (nghe nam)) thu ((va dung) or (vat dung)) sai cua triet*.