Perhaps you should try some spelling variations:
thanh di » thanh doi, thanh de, thanh do
tu sach » thu sach, su sach, te sach
ky sang » ky nang, ky dang, duy sang
ky tang » ky nang, ky dang, kho tang
hieu ve » hieu va, hieu van
xuc ban » duc ban, quoc ban, xuat ban
cuc ban » cua ban, cac ban, cuu ban
ve cam » ve cham, ve cac, va cam
di cua » dai cua, doi cua, de 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: tu sach ((ky sang) OR (ky tang)) xa hoi. hieu ve cam ((xuc ban) OR (cuc ban)) thanh di cua vat~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ((ky sang) OR (ky tang)) xa hoi. hieu ve cam ((xuc ban) or (cuc ban)) thanh di cua vat~".
• Adding a wildcard symbol may retrieve word variants: tu sach ((ky sang) OR (ky tang)) xa hoi. hieu ve cam ((xuc ban) or (cuc ban)) thanh di cua vat*.