Perhaps you should try some spelling variations:
va triet » va thiet, va trien, ve triet
ky lang » ky nang, ky dang, ky tang
lang xa » lang ha, dang xay, lang van
qua cac » cua cac
cac luc » cau luc, coc luc, cac nuoc
va hanh » van hanh, va thanh, ban hanh
va danh » va dinh, va dan, dia danh
so sac » so sach, so dac
sac ky » cac ky, sai ky
vi va » vi van, vai va, vu va

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "so sac ky lang xa hoi. hieu qua cac luc ((va hanh) OR (va danh)) vi va triet~".
• Adding a wildcard symbol may retrieve word variants: so sac ky lang xa hoi. hieu qua cac luc ((va hanh) OR (va danh)) vi va triet*.