Perhaps you should try some spelling variations:
ban hanh » ban hang
phuc ban » phuc van, thuc ban, thuoc ban
te sach » toc sach
hanh de » hanh ve, hanh kem
sach ky » sac ky, sach y, sach ty
cua tre » cua te, cuu tre, cua triet
sang ma » tang ma, nang ma, sang tao
nang xa » nang x, lang xa, nang ma
ve cac » va cac, vien cac
de cua » le cua, te cua, dieu cua
ve cau » ke cau, va cau, le cau

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach ky ((nang xa) or (sang ma)) hoi. hieu ((ve cau) OR (ve cac)) phuc ban hanh de cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky ((nang xa) OR (sang ma)) hoi. hieu ((ve cau) OR (ve cac)) phuc ban hanh de cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky ((nang xa) or (sang ma)) hoi. hieu ((ve cau) OR (ve cac)) phuc ban hanh de cua tre*".