Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
hat chau » lai chau, hat nhan, huu chau
xuc ban » duc ban, cuc ban, quoc ban
ha chau » a chau, lai chau, hoa chat
tu sach » thu sach, su sach, te sach
van dau » van dao, phan dau
van cam » van nam, van lam, van cau
y nang » ky nang, ly nang, v nang
x hoi » xa hoi, o hoi, x ho

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 y nang x hoi. hieu ((van cam) or (van dau)) xuc ban thanh ((hat chau) or (ha chau)) tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y nang x hoi. hieu ((van cam) OR (van dau)) xuc ban thanh ((hat chau) OR (ha chau)) tre.
• Adding a wildcard symbol may retrieve word variants: tu sach y nang x hoi. hieu ((van cam) or (van dau)) xuc ban thanh ((hat chau) or (ha chau)) tre*.