Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
sang tai » hang tai, sang tao, tang tai
va thanh » gia thanh, va tinh, le thanh
tu sach » thu sach, su sach, te sach
ky sang » ky nang, ky dang, ky tang
tai hoi » tai khoi, dai hoi, tai hai
su chat » su phat, du chat, so chat
vai cua » dai cua, hai cua, lai cua
sach ky » sac ky, sach y, sach ty
tu phat » su phat, te phat, xu phat
cua tu » cua tuc, cua su, cua cu

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 sang tai hoi. hieu ((su chat) or (tu phat)) xuc ((va thanh) OR (ban thanh)) vai cua tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky sang tai hoi. hieu ((su chat) OR (tu phat)) xuc ((va thanh) OR (ban thanh)) vai cua tu.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ky sang tai hoi. hieu ((su chat) or (tu phat)) xuc ((va thanh) OR (ban thanh)) vai cua tu".
• Adding a wildcard symbol may retrieve word variants: tu sach ky sang tai hoi. hieu ((su chat) or (tu phat)) xuc ((va thanh) OR (ban thanh)) vai cua tu*.