Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
hieu van » hieu va, thien van, lieu va
tu sach » thu sach, su sach, tu cach
te sach » toc sach
cao hoi » cau hoi, co hoi, cao hoc
van cam » van nam, van lam, van cau
xuc ban » duc ban, cuc ban, quoc ban
tai cua » thai cua, tai cuc, dai cua

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