Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
hanh vai » hanh vi, hanh va, hanh tai
hieu ve » hieu va
va hanh » van hanh, va thanh, va danh
vai cua » dai cua, hai cua, lai cua
sac ky » sai ky
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 ((sac ky) OR (cac ky)) nang x hoi. ((hieu ve) or (hieu van)) pham duc va hanh vai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sac ky) OR (cac ky)) nang x hoi. ((hieu ve) OR (hieu van)) pham duc va hanh vai cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sac ky) OR (cac ky)) nang x hoi. ((hieu ve) or (hieu van)) pham duc va hanh vai cua te".
• Adding a wildcard symbol may retrieve word variants: tu ((sac ky) OR (cac ky)) nang x hoi. ((hieu ve) or (hieu van)) pham duc va hanh vai cua te*.