Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
hieu van » hieu va, thien van, lieu va
van cham » van chat, van tham, va cham
cham duc » pham duc, cham soc, pham duy
van hanh » van thanh, ban hanh, van anh
su sach » so sach, vu sach
ty nang » ty xang, ty hang, ly nang
duc van » duc va, duc tan, duc manh
vi cua » vai cua, di cua
x hoi » xa hoi, x ho, 5 hoi
o hoi » co hoi, o hoc, o hai

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 ((ty nang) or (ky nang)) ((x hoi) OR (o hoi)). hieu van cham duc van hanh vi cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ((ty nang) OR (ky nang)) ((x hoi) OR (o hoi)). hieu van cham duc van hanh vi cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ((ty nang) or (ky nang)) ((x hoi) OR (o hoi)). hieu van cham duc van hanh vi cua triet".
• Adding a wildcard symbol may retrieve word variants: su sach ((ty nang) or (ky nang)) ((x hoi) OR (o hoi)). hieu van cham duc van hanh vi cua triet*.