Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
thu sach » tu sach, thuat sach, thuoc sach
sach ky » sac ky, sach y, sach ty
hieu ve » hieu va, hieu van
cao suc » cao su, cao duc
suc van » su van, duc van, luc van
lap cua » lai cua, tap cua, ap cua
lam cua » nam cua, lam chat
ve cao » va cao, ve bao, ve cac

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu sach ky nang ((xa hoi) or (ma hoa)). hieu ve cao suc van thanh ((lap cua) OR (lam cua)) triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu sach ky nang ((xa hoi) OR (ma hoa)). hieu ve cao suc van thanh ((lap cua) OR (lam cua)) triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sach ky nang ((xa hoi) or (ma hoa)). hieu ve cao suc van thanh ((lap cua) OR (lam cua)) triet".
• Adding a wildcard symbol may retrieve word variants: thu sach ky nang ((xa hoi) or (ma hoa)). hieu ve cao suc van thanh ((lap cua) OR (lam cua)) triet*.