Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
thanh tai » thanh hai, thanh toan, doanh tai
thi hang » thi nang, thi hong, thi thanh
thi hanh » thi thanh
hieu van » hieu va, thien van, lieu va
cuc viet » chuc viet, tuc viet, cua viet
tu sach » thu sach, su sach, te sach
van cam » van nam, van lam, van cau
xuc ban » duc ban, cuc ban, quoc ban
ca hoi » cau hoi, cua hoi, xa hoi

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 ((thi hang) or (thi hanh)) ca hoi. hieu van cam xuc ban thanh tai cuc viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ((thi hang) OR (thi hanh)) ca hoi. hieu van cam xuc ban thanh tai cuc viet.
• Adding a wildcard symbol may retrieve word variants: tu sach ((thi hang) or (thi hanh)) ca hoi. hieu van cam xuc ban thanh tai cuc viet*.