Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
hieu van » hieu va, thien van, lieu va
thanh va » thanh van, hanh va, thanh ha
xuc ban » duc ban, cuc ban, quoc ban
lam xuc » cam xuc, lam duoc
van lam » van nam
tu sach » thu sach, su sach, te sach
ky dang » ky nang, ky danh
ky tang » ky nang, kho tang, ky trong
ky sang » ky nang, duy sang
cua tre » cua te, cuu tre, cua triet
va cua » va chua, via cua, ca 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 tang))) or (ky dang)) ma hoa. hieu van lam xuc ban thanh va cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ((((ky sang) OR (ky tang))) OR (ky dang)) ma hoa. hieu van lam xuc ban thanh va cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ((((ky sang) OR (ky tang))) or (ky dang)) ma hoa. hieu van lam xuc ban thanh va cua tre".
• Adding a wildcard symbol may retrieve word variants: tu sach ((((ky sang) OR (ky tang))) or (ky dang)) ma hoa. hieu van lam xuc ban thanh va cua tre*.