Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
toc sach » hoc sach, doc sach, thuoc sach
hanh di » hanh vi, hanh de, hang di
va hanh » van hanh, va thanh, va danh
nang xa » nang x, lang xa, nang ma
vu nang » vuc nang, va nang, vu dang
hieu va » hieu qua
xuc va » duc va, tuc va, luc va
di cua » dai cua, doi cua, de cua

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