Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
danh bat » doanh bat, anh bai, dinh ba
xac danh » xac dinh, tac danh, sach danh
kho tang » cao tang
nghe nam » nghe lam, nghiep nam, nghe nano
bat cua » ban cua, mat cua, bai cua
thu xac » thau xay
tu sach » thu sach, su sach, te sach
ky tang » ky nang, ky dang, ky trong
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: tu sach ((ky tang) OR (kho tang)) ma hoi. hieu ((he nam) or (nghe nam)) thu xac danh bat cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ((ky tang) OR (kho tang)) ma hoi. hieu ((he nam) OR (nghe nam)) thu xac danh bat cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ((ky tang) OR (kho tang)) ma hoi. hieu ((he nam) or (nghe nam)) thu xac danh bat cua triet".
• Adding a wildcard symbol may retrieve word variants: tu sach ((ky tang) OR (kho tang)) ma hoi. hieu ((he nam) or (nghe nam)) thu xac danh bat cua triet*.