Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
vu sach » vu bach, su sach, vu khach
sach ky » sac ky, sach y, sach ty
ky dang » ky nang, ky danh
dang xa » dang xay, lang xa, dang ha
qua cam » qua cham, qua cac, qua ca
xuc va » tuc va, xac va
luc va » tuc va, loc va
vi cua » vai cua, di 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: vu sach ky dang xa hoi. hieu qua cam ((xuc va) OR (((luc va) OR (duc va)))) hanh vi cua triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sach ky dang xa hoi. hieu qua cam ((xuc va) or (((luc va) OR (duc va)))) hanh vi cua triet~".
• Adding a wildcard symbol may retrieve word variants: vu sach ky dang xa hoi. hieu qua cam ((xuc va) or (((luc va) OR (duc va)))) hanh vi cua triet*.