Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
hieu van » hieu va, thien van, hieu ve
thanh di » thanh doi, thanh de, thanh do
tu sach » thu sach, su sach, te sach
ky sang » ky nang, ky tang, duy sang
ky dang » ky nang, ky danh
lam xuc » cam xuc, lam duoc
xuc ban » duc ban, cuc ban, quoc ban
cua tre » cua te, cuu tre, cua triet
di cua » dai cua, doi cua, de cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach ((ky sang) or (ky dang)) ma hoa. ((hieu van) OR (lieu va)) lam xuc ban thanh di cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ((ky sang) OR (ky dang)) ma hoa. ((hieu van) OR (lieu va)) lam xuc ban thanh di cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ((ky sang) or (ky dang)) ma hoa. ((hieu van) OR (lieu va)) lam xuc ban thanh di cua tre".
• Adding a wildcard symbol may retrieve word variants: tu sach ((ky sang) or (ky dang)) ma hoa. ((hieu van) OR (lieu va)) lam xuc ban thanh di cua tre*.