Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
hieu van » hieu va, thien van, lieu va
van cham » van chat, van tham, va cham
cham duc » pham duc, cham soc, pham duy
ban hang » ngan hang
su triet » su viet, su tien, ve triet
tu sach » thu sach, su sach, te sach
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 cham duc ((ban hang) or (van thanh)) lai su triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y nang x hoi. hieu van cham duc ((ban hang) OR (van thanh)) lai su triet.
• Adding a wildcard symbol may retrieve word variants: tu sach y nang x hoi. hieu van cham duc ((ban hang) or (van thanh)) lai su triet*.