Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
dang xay » dang van, van xay
hanh va » hang va, hanh vi
xa hanh » xa thanh, xa khanh, va hanh
va khai » van khai, va khao, va kha
te sach » toc sach
nang xa » nang x, lang xa, nang ma
va cua » va chua, via cua, ca cua
va hai » van hai, va chai, va bai

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 (dang xay)) hoi. lieu ((va hai) OR (va khai)) tuc xa hanh va cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y ((nang xa) OR (dang xay)) hoi. lieu ((va hai) OR (va khai)) tuc xa hanh va cua triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach y ((nang xa) or (dang xay)) hoi. lieu ((va hai) OR (va khai)) tuc xa hanh va cua triet*".