Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
thanh di » thanh doi, thanh de, thanh do
truc ban » thuc ban, truc dan, truc van
dau truc » cau truc, dai truc, doan truc
sach ty » sach tu, sach thu, xach tay
cua tre » cua te, cuu tre, cua triet
nang ma » tang ma, sang ma, nang cao
nang xa » nang x, lang xa, mang xa
va dau » va dao
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: su ((sach ty) or (sach y)) ((nang xa) OR (nang ma)) hoi. lieu va dau truc ban thanh di cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su ((sach ty) OR (sach y)) ((nang xa) OR (nang ma)) hoi. lieu va dau truc ban thanh di cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su ((sach ty) or (sach y)) ((nang xa) OR (nang ma)) hoi. lieu va dau truc ban thanh di cua tre*".