Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
hanh thai » nhanh thai, hinh thai, hanh tai
thai cua » than cua, tai cuc, tri cua
tang van » dang van, hoang van, trong van
hieu van » hieu va, thien van, lieu va
cac luc » coc luc, cac nuoc, cac cuoc
va hanh » van hanh, va thanh, va danh
cau luc » cau truc, cau phuc
te sach » toc sach
nang xa » nang x, lang xa, nang ma

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 (tang van)) hoi. hieu van ((cac luc) OR (cau 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 (tang van)) hoi. hieu van ((cac luc) OR (cau 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 (tang van)) hoi. hieu van ((cac luc) OR (cau luc)) va hanh thai cua triet".
• Adding a wildcard symbol may retrieve word variants: te sach y ((nang xa) or (tang van)) hoi. hieu van ((cac luc) OR (cau luc)) va hanh thai cua triet*.