Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
thuat san » thuat toan, thuat song, thuat lanh
thanh ban » thanh san, thanh van, thanh bac
nam thuc » nam thuoc, am thuc, nam thu
hieu ve » hieu va, hieu van
cam tuc » cam xuc, cam tu, dam thuc
ban cuu » ban cua, ban cau, ban muu
cuu tre » cua tre, cau tren, cau treo
san ky » sang ky, van ky, dan ky
x hoi » xa hoi, o hoi, 5 hoi

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

• Performing a fuzzy search may retrieve terms with similar spellings: thuat san ky nang ((x hoi) or (x ho)). hieu ve ((cam tuc) or (nam thuc)) ban thanh ban cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thuat san ky nang ((x hoi) OR (x ho)). hieu ve ((cam tuc) OR (nam thuc)) ban thanh ban cuu tre.
• Adding a wildcard symbol may retrieve word variants: thuat san ky nang ((x hoi) or (x ho)). hieu ve ((cam tuc) or (nam thuc)) ban thanh ban cuu tre*.