Perhaps you should try some spelling variations:
su triet » su viet, su tien
thanh xa » thanh ha, thanh va, thanh ba
ve triet » va trien
hanh dam » thanh dam, hanh lam, hanh nam
hieu van » hieu va, thien van, lieu va
sach thi » sach thu, sach tai, sach thieu
va hanh » van hanh, va thanh, va danh
tu sach » thu sach, su sach, te sach
hieu ve » hieu va
xuc va » duc va, tuc va, luc va

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

• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach thi thanh xa hoi. ((hieu ve) OR (hieu van)) cam xuc va hanh dam ((ve triet) OR (su triet))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach thi thanh xa hoi. ((hieu ve) or (hieu van)) cam xuc va hanh dam ((ve triet) OR (su triet))~".
• Adding a wildcard symbol may retrieve word variants: tu sach thi thanh xa hoi. ((hieu ve) or (hieu van)) cam xuc va hanh dam ((ve triet) OR (su triet))*.