Perhaps you should try some spelling variations:
thu sach » thuat sach, thuoc sach, thu hoach
banh vai » hanh vi, ban va, hanh va
ban banh » ban hanh, ban anh, ban danh
vai cua » dai cua, hai cua, lai cua
cuc ban » cua ban, cac ban, cuu ban
cam cuc » cam xuc, cham cuu, pham cuc
hieu va » lieu va, hieu qua
cua tre » cua te, cuu tre, cua triet
nang ma » tang ma, sang ma, nang cao
nang xa » nang x, lang xa, mang xa
tu sach » su sach, te sach, tu cach
va cam » va cham, va cac, va cao

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) OR (tu sach)) ky ((nang xa) or (nang ma)) hoi. hieu va cam cuc ban banh vai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thu sach) OR (tu sach)) ky ((nang xa) OR (nang ma)) hoi. hieu va cam cuc ban banh vai cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((thu sach) OR (tu sach)) ky ((nang xa) or (nang ma)) hoi. hieu va cam cuc ban banh vai cua tre*".