Perhaps you should try some spelling variations:
van cham » van chat, van tham, va cham
cham tuc » nham thuc, pham thuc, tham thuc
vanh tai » van tai, hanh tai, anh tai
xanh tai » hanh tai, anh tai, doanh tai
mai khoi » mai khoa, tai khoa, cac khoi
hieu van » hieu va, thien van, lieu va
cua tre » cua te, cuu tre, cua triet
mai hoi » dai hoi, lai hoi, mai doi
ky tang » ky nang, ky dang, kho tang
san ky » sang ky, van ky, dan ky
tuc va » thuc va, truc va, tuc xa
vu san » va san, vu ban

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu san ky tang ((mai hoi) OR (mai khoi)). hieu van cham tuc va ((xanh tai) or (vanh tai)) cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu san ky tang ((mai hoi) OR (mai khoi)). hieu van cham tuc va ((xanh tai) OR (vanh tai)) cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu san ky tang ((mai hoi) OR (mai khoi)). hieu van cham tuc va ((xanh tai) or (vanh tai)) cua tre*".