Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
thanh lap » thanh san, phan lap, thanh hai
cham tuc » nham thuc, pham thuc, tham thuc
dua tren » dung tren
tu sach » thu sach, su sach, te sach
tuc ban » thuc ban, truc ban, tu ban
hieu va » lieu va, hieu qua
va cham » va chat, va tham
sach ty » sach y, sach tu, sach thu
tay hoi » tay ho, tay thai
tao hoi » tao khoi, tao boi, thao hoc
ty danh » ty doanh, ty anh, ky danh
cua te » cua tu

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 ty danh ((tao hoi) OR (tay hoi)). hieu va cham tuc ban thanh lap ((dua tren) or (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ty danh ((tao hoi) OR (tay hoi)). hieu va cham tuc ban thanh lap ((dua tren) OR (cua te)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ty danh ((tao hoi) OR (tay hoi)). hieu va cham tuc ban thanh lap ((dua tren) or (cua te))".
• Adding a wildcard symbol may retrieve word variants: tu sach ty danh ((tao hoi) OR (tay hoi)). hieu va cham tuc ban thanh lap ((dua tren) or (cua te))*.