Perhaps you should try some spelling variations:
cua triet » su triet, va triet
cua viet » ca viet, hoa viet, cua vat
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 cham » va cham, ve chat, vu cham
va hanh » van hanh, va thanh, va danh
y nang » ky nang, ly nang, v nang
soc va » hoc va, loc va, doc va

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 cham soc va hanh vi ((cua triet) OR (cua viet))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) or (vu sach)) y nang xa hoi. hieu ve cham soc va hanh vi ((cua triet) OR (cua viet))~".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (vu sach)) y nang xa hoi. hieu ve cham soc va hanh vi ((cua triet) OR (cua viet))*.