Perhaps you should try some spelling variations:
thu sach » tu sach, thuat sach, thuoc sach
va triet » va thiet, ve triet, cua triet
hanh vai » hanh vi, hanh va, hanh tai
va trien » va truyen, va thiet, va tuyen
hieu ve » hieu va, hieu van
sach ky » sac ky, sach y, sach ty
va hanh » van hanh, va thanh, va danh
ky sang » ky nang, ky dang, ky tang
ma hoi » mai hoi, ma hoa, me hoi
xuc va » duc va, tuc va, luc va
ve cam » ve cham, ve cac, va cam

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu sach ky sang ((ma hoi) or (xa hoi)). hieu ve cam xuc va hanh vai ((va triet) or (va trien))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ky sang ((ma hoi) OR (xa hoi)). hieu ve cam xuc va hanh vai ((va triet) OR (va trien)).
• Adding a wildcard symbol may retrieve word variants: thu sach ky sang ((ma hoi) or (xa hoi)). hieu ve cam xuc va hanh vai ((va triet) or (va trien))*.