Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
thanh vi » hanh vi, thanh va, thanh ve
te sach » toc sach
ve cham » va cham, ve chat, vu cham
tuc van » thuc van, truc van, tuc va
cua duc » cua tuc, cua nuoc, cua quoc
tay hoi » tay ho, tao hoi, tay thai
xay hoi » xa hoi, cay phoi, gay thoi
y dang » ky dang, 2 dang, _ dang
vi cua » vai cua, di cua
va cam » va cham, va cac, va cao

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: te sach y dang ((xay hoi) OR (tay hoi)). hieu ((va cam) or (ve cham)) tuc van thanh vi cua duc~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach y dang ((xay hoi) OR (tay hoi)). hieu ((va cam) OR (ve cham)) tuc van thanh vi cua duc.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach y dang ((xay hoi) OR (tay hoi)). hieu ((va cam) or (ve cham)) tuc van thanh vi cua duc".
• Adding a wildcard symbol may retrieve word variants: te sach y dang ((xay hoi) OR (tay hoi)). hieu ((va cam) or (ve cham)) tuc van thanh vi cua duc*.