Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
hanh thai » nhanh thai, hinh thai, hanh tai
hieu van » hieu va, thien van, lieu va
thai cua » than cua, tai cuc, tri cua
lang xa » dang xay, lang van
lang ha » long ha
van cac » van hac, van cau, van bac
cac luc » cau luc, coc luc, cac nuoc
va hanh » van hanh, va thanh, va danh
nang xa » nang x, nang ma, mang xa
te sach » toc sach
luc va » duc va, tuc va, loc va

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