Perhaps you should try some spelling variations:
hieu va » lieu va, hieu qua
va cham » va chat, va tham
ky sang » ky nang, ky dang, ky tang
sang ma » tang ma, nang ma, sang tao
soc ban » hoc ban, coc ban, soc ba
vi cua » vai cua, di cua
so ban » sao ban, so bang, co ban
tu sac » tu sach, tu cac, tu bac
ma hoi » mai hoi, xa hoi, ma hoa
tu san » thu san, tu ban, tu can
cua te » cua tu

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 sac) OR (tu san)) ky sang ma hoi. hieu va cham ((soc ban) OR (so ban)) hanh vi cua te~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sac) or (tu san)) ky sang ma hoi. hieu va cham ((soc ban) OR (so ban)) hanh vi cua te~".
• Adding a wildcard symbol may retrieve word variants: ((tu sac) or (tu san)) ky sang ma hoi. hieu va cham ((soc ban) OR (so ban)) hanh vi cua te*.