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
va hanh » van hanh, va thanh, va danh
cac loc » cac lop, cac toc, cac hoc
te sach » toc sach
hieu ve » hieu va
lang xa » lang ha, dang xay, lang van
nang xa » nang x, nang ma, mang xa
loc va » hoc va, luc 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)) hoi. ((hieu ve) OR (hieu van)) cac loc 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)) hoi. ((hieu ve) OR (hieu van)) cac loc 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)) hoi. ((hieu ve) OR (hieu van)) cac loc va hanh thai cua triet".
• Adding a wildcard symbol may retrieve word variants: te sach y ((nang xa) or (lang xa)) hoi. ((hieu ve) OR (hieu van)) cac loc va hanh thai cua triet*.