Perhaps you should try some spelling variations:
ban banh » ban hanh, ban danh, ban thanh
cham cuu » cap cuu, chat cua
hieu van » hieu va, thien van, lieu va
van cham » van chat, van tham, va cham
nang xa » nang x, lang xa, nang ma
sach ky » sach y, sach ty, sach kem
ban anh » ban hanh, ban danh, bang anh
cuu tre » cua tre, cau tren, cau treo
sac ky » cac ky, sai ky
di cuu » di cau, di cua, dinh cuu

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

• Performing a fuzzy search may retrieve terms with similar spellings: thu ((sach ky) or (sac ky)) nang xa hoi. hieu van cham cuu ((ban banh) OR (ban anh)) di cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu ((sach ky) OR (sac ky)) nang xa hoi. hieu van cham cuu ((ban banh) OR (ban anh)) di cuu tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu ((sach ky) or (sac ky)) nang xa hoi. hieu van cham cuu ((ban banh) OR (ban anh)) di cuu tre*".