Perhaps you should try some spelling variations:
va thanh » gia thanh, ban thanh, le thanh
cham xuc » cam xuc, chat xuc, cham soc
tu sach » thu sach, su sach, te sach
va tinh » may tinh
va cham » va chat, va tham
hieu va » lieu va, hieu qua
ky tang » ky nang, ky dang, kho tang
so viet » hoc viet
ma hoi » mai hoi, xa hoi, ma hoa
7 tang » 6 tang
hai so » dai so, tai so, thai son

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 ((ky tang) OR (7 tang)) ma hoi. hieu va cham xuc ((va thanh) OR (va tinh)) hai so viet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ((ky tang) or (7 tang)) ma hoi. hieu va cham xuc ((va thanh) OR (va tinh)) hai so viet~".
• Adding a wildcard symbol may retrieve word variants: tu sach ((ky tang) or (7 tang)) ma hoi. hieu va cham xuc ((va thanh) OR (va tinh)) hai so viet*.