Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
van cham » van chat, van tham, va cham
va triet » va thiet, va trien, ve triet
tu sach » thu sach, su sach, te sach
ly nang » ky nang, ly hang, ly vang
va hanh » van hanh, va thanh, va danh
y nang » ky nang, v nang, may nang
soc va » hoc va, loc va, doc va
vi va » vi van, vai va, vu va

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 ((y nang) or (ly nang)) xa hoi. hieu van cham soc va hanh vi va triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ((y nang) OR (ly nang)) xa hoi. hieu van cham soc va hanh vi va triet.
• Adding a wildcard symbol may retrieve word variants: tu sach ((y nang) or (ly nang)) xa hoi. hieu van cham soc va hanh vi va triet*.