Perhaps you should try some spelling variations:
thien van » thi van
cua triet » cua viet, su triet, va triet
va hanh » van hanh, va thanh, va danh
nam xuc » cam xuc, nam xua, nam thuc
sach ty » sach y, sach tu, sach thu
tu sach » thu sach, su sach, te sach
ty hang » ly hang, ty xang, thi hang
su viet » so viet
xuc va » duc va, tuc va, luc va
ca hoi » cau hoi, cua hoi, co hoi

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach ty hang ((ca hoi) or (xa hoi)). thien van nam xuc va hanh vi ((cua triet) or (su viet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ty hang ((ca hoi) OR (xa hoi)). thien van nam xuc va hanh vi ((cua triet) OR (su viet)).
• Adding a wildcard symbol may retrieve word variants: tu sach ty hang ((ca hoi) or (xa hoi)). thien van nam xuc va hanh vi ((cua triet) or (su viet))*.