Perhaps you should try some spelling variations:
xanh tra » thanh tra, khanh tra, hanh tram
cham tuc » nham thuc, pham thuc, tham thuc
cuu tre » cua tre, cau tren, cau treo
ky tang » ky nang, ky dang, kho tang
tra cuu » tra cau, trau cua, trua cua
va xanh » va danh, va hanh, va anh
hieu ve » hieu van
hieu va » lieu va, hieu qua
tuc va » thuc va, truc va, tuc xa
vu ban » tu ban, va ban
ban ky » van ky, dan ky
ma hoi » mai hoi, ma hoa, me hoi

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

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