Perhaps you should try some spelling variations:
ban danh » ban doanh, ban hanh, ban dan
tu sach » thu sach, su sach, te sach
hai cua » thai cua, dai cua, hoi cua
ban anh » ban hanh, ban banh, bang anh
cam duc » cam xuc, cao duc, pham duc
hieu va » lieu va, hieu qua
sach ty » sach y, sach tu, sach thu
sang ma » tang ma, nang ma, sang tao
nang xa » nang x, lang xa, nang ma
va cam » va cham, va cac, va cao
cua te » cua tu

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 ty ((nang xa) or (sang ma)) hoi. hieu va cam duc ((ban anh) OR (ban danh)) hai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ty ((nang xa) OR (sang ma)) hoi. hieu va cam duc ((ban anh) OR (ban danh)) hai cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ty ((nang xa) or (sang ma)) hoi. hieu va cam duc ((ban anh) OR (ban danh)) hai cua te".
• Adding a wildcard symbol may retrieve word variants: tu sach ty ((nang xa) or (sang ma)) hoi. hieu va cam duc ((ban anh) OR (ban danh)) hai cua te*.