Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
hanh tai » thanh tai, hang tai, han tai
hieu ve » hieu va
va hanh » van hanh, va thanh, va danh
tai cua » thai cua, tai cuc, tri 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 tai 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 tai 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 tai cua te*.