Perhaps you should try some spelling variations:
va triet » va thiet, va trien, ve triet
su sach » so sach, vu sach
mai hoi » mai khoi, dai hoi, lai hoi
hieu ve » hieu va, hieu van
dinh vi » dinh ve, dinh viet, dinh tri
y nang » ky nang, ly nang, v nang
ve cam » ve cham, ve cac, va cam
xuc va » duc va, tuc va, luc va

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach y nang ((ma hoa) or (mai hoi)). hieu ve cam xuc va ((hanh vi) or (dinh vi)) va triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach y nang ((ma hoa) OR (mai hoi)). hieu ve cam xuc va ((hanh vi) OR (dinh vi)) va triet.
• Adding a wildcard symbol may retrieve word variants: su sach y nang ((ma hoa) or (mai hoi)). hieu ve cam xuc va ((hanh vi) or (dinh vi)) va triet*.