Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
toc sach » hoc sach, doc sach, thuoc sach
hanh day » hanh may, han day, hanh dao
hieu van » hieu va, thien van, lieu va
day cua » dai cua
va hanh » van hanh, va thanh, va danh
lam tuc » lam thuoc, lam truoc, luat tuc
van lam » van nam
nang xa » nang x, nang ma, mang xa
lang xa » lang ha, dang xay, lang van
tuc va » thuc va, truc va, tuc xa

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) or (toc sach)) tu ((nang xa) OR (lang xa)) hoi. hieu van lam tuc va hanh day cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sach) OR (toc sach)) tu ((nang xa) OR (lang xa)) hoi. hieu van lam tuc va hanh day cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((te sach) or (toc sach)) tu ((nang xa) OR (lang xa)) hoi. hieu van lam tuc va hanh day cua triet".
• Adding a wildcard symbol may retrieve word variants: ((te sach) or (toc sach)) tu ((nang xa) OR (lang xa)) hoi. hieu van lam tuc va hanh day cua triet*.