Perhaps you should try some spelling variations:
thieu nang » thien nang, thieu khang, thieu quang
thu sach » thuat sach, thuoc sach, thu hoach
va thanh » gia thanh, ban thanh, va tinh
tu sach » su sach, te sach, tu cach
hieu ve » hieu va, hieu van
cao duc » dao duc, cao suc, giao duc
ve cao » va cao, ve bao, ve cac
co cua » con cua, cong cua, cuoi cua
x hoi » xa hoi, o hoi, x ho

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: ((thu sach) OR (tu sach)) thieu nang x hoi. hieu ve cao duc va thanh ((co cua) OR (ca cua)) te~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((thu sach) or (tu sach)) thieu nang x hoi. hieu ve cao duc va thanh ((co cua) OR (ca cua)) te~".
• Adding a wildcard symbol may retrieve word variants: ((thu sach) or (tu sach)) thieu nang x hoi. hieu ve cao duc va thanh ((co cua) OR (ca cua)) te*.