Perhaps you should try some spelling variations:
ve triet » va trien, su triet
nha tang » nha trang, nham tang, ha tang
hanh va » hang va, hanh vi
va hanh » van hanh, va thanh, va danh
va chat » van chat, va phat, cao chat
so sach » so sanh, bo sach, co sach
ve cham » va cham, ve chat, vu cham
ma hoi » mai hoi, ma hoa, me hoi
va ve » va de, va le, va vi

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

• Performing a fuzzy search may retrieve terms with similar spellings: so sach nha tang ((ma hoi) or (xa hoi)). hieu ((ve cham) or (va chat)) duc va hanh va ve triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach nha tang ((ma hoi) OR (xa hoi)). hieu ((ve cham) OR (va chat)) duc va hanh va ve triet.
• Adding a wildcard symbol may retrieve word variants: so sach nha tang ((ma hoi) or (xa hoi)). hieu ((ve cham) or (va chat)) duc va hanh va ve triet*.