Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
thanh vi » hanh vi, thanh va, thanh ve
lang mai » lang dai, lang hai, lang man
nang mai » nang ma, nang tai, nang cai
cua tre » cua te, cuu tre, cua triet
tuc ban » thuc ban, truc ban, tu ban
ve cham » ve chat, vu cham, ve chim
va cham » va chat, va tham
vi cua » vai cua, di cua
tu cao » cu cao, tu cac, vu cao

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

• If you are trying to use Boolean operators, they must be ALL CAPS: tu cao ky ((nang mai) OR (lang mai)) hoi. hieu ((ve cham) OR (va cham)) tuc ban thanh vi cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu cao ky ((nang mai) or (lang mai)) hoi. hieu ((ve cham) OR (va cham)) tuc ban thanh vi cua tre~".
• Adding a wildcard symbol may retrieve word variants: tu cao ky ((nang mai) or (lang mai)) hoi. hieu ((ve cham) OR (va cham)) tuc ban thanh vi cua tre*.