Perhaps you should try some spelling variations:
hieu viec » nhieu viec, hieu ve, sieu viet
hanh vai » hanh vi, hanh va, hanh tai
van hanh » van thanh, ban hanh, van anh
cac tuc » cac tu, cac tac, cac nuoc
cac toc » cac toi, cac nuoc, cac thoi
vai cua » dai cua, hai cua, lai cua
san ky » sang ky, van ky, ban ky
dan ky » van 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: vu ((san ky) or (dan ky)) nang x hoi. hieu viec ((cac tuc) OR (cac toc)) van hanh vai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu ((san ky) OR (dan ky)) nang x hoi. hieu viec ((cac tuc) OR (cac toc)) van hanh vai cua te*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu ((san ky) or (dan ky)) nang x hoi. hieu viec ((cac tuc) OR (cac toc)) van hanh vai cua te*".