Perhaps you should try some spelling variations:
banh vai » hanh vi, ban va, hanh va
ban banh » ban hanh, ban anh, ban danh
tu sach » thu sach, su sach, te sach
van cau » van dau, van hau, van chat
vai cua » dai cua, hai cua, lai cua
cac ban » cac dan, cac van, can ban
van cam » van nam, van lam, van dam
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
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 ky ((nang xa) or (nang cao)) hoi. hieu ((van cam) OR (van cau)) cac ban banh vai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky ((nang xa) OR (nang cao)) hoi. hieu ((van cam) OR (van cau)) cac ban banh vai cua te*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ky ((nang xa) or (nang cao)) hoi. hieu ((van cam) OR (van cau)) cac ban banh vai cua te*".