Perhaps you should try some spelling variations:
ban hanh » ban hang
tu sach » thu sach, su sach, te sach
soc ban » hoc ban, coc ban, so ban
va chat » van chat, va phat, cao chat
va cham » va tham
sang ma » tang ma, nang ma, sang tao
ky sang » ky nang, ky dang, ky tang
ma hoi » mai hoi, xa hoi, ma hoa
tu san » thu san, tu ban, tu can
vi cua » vai cua, di cua
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 sach) OR (tu san)) ky sang ma hoi. hieu ((va cham) OR (va chat)) soc ban hanh vi cua te~.
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (tu san)) ky sang ma hoi. hieu ((va cham) or (va chat)) soc ban hanh vi cua te*.