Perhaps you should try some spelling variations:
van hanh » van thanh, ban hanh, van anh
hanh dai » hanh tai, hanh dao, vanh dai
thu san » thuy san, thu ban, phu san
hieu ve » hieu va, hieu van
cam duc » cam xuc, pham duc, nam duoc
cao duc » dao duc, cao suc, giao duc
cua te » cua tu
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu cac) or (thu san)) ky nang x hoi. hieu ve ((cam duc) or (cao duc)) van hanh dai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu cac) OR (thu san)) ky nang x hoi. hieu ve ((cam duc) OR (cao duc)) van hanh dai cua te.
• Adding a wildcard symbol may retrieve word variants: ((tu cac) or (thu san)) ky nang x hoi. hieu ve ((cam duc) or (cao duc)) van hanh dai cua te*.