Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
tai cac » tai cuc
tai cau » tai cao
xuc ban » duc ban, cuc ban, quoc ban
tu sach » thu sach, su sach, tu cach
cao hoi » cau hoi, co hoi, cao hoc
ty nang » ky nang, ty xang, ty hang
te sach » toc sach
hieu va » lieu va, hieu qua
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: ((tu sach) or (te sach)) ty nang cao hoi. hieu va cam xuc ban thanh ((tai cau) OR (tai cac)) treo~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (te sach)) ty nang cao hoi. hieu va cam xuc ban thanh ((tai cau) OR (tai cac)) treo.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tu sach) or (te sach)) ty nang cao hoi. hieu va cam xuc ban thanh ((tai cau) OR (tai cac)) treo".
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (te sach)) ty nang cao hoi. hieu va cam xuc ban thanh ((tai cau) OR (tai cac)) treo*.