Perhaps you should try some spelling variations:
chat soc » cham soc, chat hoc, chat doc
tu sach » thu sach, su sach, te sach
vu sach » vu bach, su sach, vu khach
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va, hieu van
ve chat » va chat, van chat
va hanh » van hanh, va thanh, va danh
y nang » ky nang, ly nang, v nang
soc va » hoc va, loc va, doc va
vi cua » vai cua
di cua » dai cua, doi cua, de cua

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (vu sach)) y nang xa hoi. hieu ve chat soc va hanh ((vi cua) OR (di cua)) triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) or (vu sach)) y nang xa hoi. hieu ve chat soc va hanh ((vi cua) OR (di cua)) triet~".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (vu sach)) y nang xa hoi. hieu ve chat soc va hanh ((vi cua) OR (di cua)) triet*.