Perhaps you should try some spelling variations:
thuoc sach » hoc sach, nuoc sach, thuat sach
cua triet » cua viet, su triet, va triet
hieu van » hieu va, thien van, lieu va
sach ky » sac ky, sach y, sach ty
nang xa » nang x, nang ma, mang xa
lang xa » lang ha, dang xay, lang van
hieu ve » hieu va
va hanh » van hanh, va thanh, va danh
xuc va » duc va, tuc va, luc va
vi cua » vai cua, di cua

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: thuoc sach ky ((nang xa) OR (lang xa)) hoi. ((hieu ve) or (hieu van)) cam xuc va hanh vi cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuoc sach ky ((nang xa) OR (lang xa)) hoi. ((hieu ve) OR (hieu van)) cam xuc va hanh vi cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thuoc sach ky ((nang xa) OR (lang xa)) hoi. ((hieu ve) or (hieu van)) cam xuc va hanh vi cua triet".
• Adding a wildcard symbol may retrieve word variants: thuoc sach ky ((nang xa) OR (lang xa)) hoi. ((hieu ve) or (hieu van)) cam xuc va hanh vi cua triet*.