Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
hanh dai » hanh tai, hanh dao, vanh dai
sach ky » sac ky, sach y, sach kem
va hanh » van hanh, va thanh, va danh
thuc va » thuc vat, thuc dan, thuc day
ve cham » va cham, ve chat, vu cham
lang xa » lang ha, dang xay, lang van
sach ty » sach y, sach tu, sach thu
va cao » va cac, va co, va dao

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) OR (sach ty)) lang xa hoi. hieu ((va cao) or (ve cham)) thuc va hanh dai cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te ((sach ky) OR (sach ty)) lang xa hoi. hieu ((va cao) OR (ve cham)) thuc va hanh dai cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te ((sach ky) OR (sach ty)) lang xa hoi. hieu ((va cao) or (ve cham)) thuc va hanh dai cua triet".
• Adding a wildcard symbol may retrieve word variants: te ((sach ky) OR (sach ty)) lang xa hoi. hieu ((va cao) or (ve cham)) thuc va hanh dai cua triet*.