Perhaps you should try some spelling variations:
thanh tai » thanh hai, thanh toan, doanh tai
hieu vien » hieu hien, thieu nien, hieu tieng
hieu viec » nhieu viec, hieu ve, sieu viet
va thanh » gia thanh, ban thanh, va tinh
tai cua » thai cua, tai cuc, tri cua
dang ky » dang y, dan ky, dong ky
cac tuc » cac toc, cac tu, cac tac
tuc va » thuc va, truc va, tuc xa
san ky » sang ky, van ky, dan 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 (dang ky)) nang x hoi. ((hieu vien) OR (hieu viec)) cac tuc va thanh tai cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu ((san ky) OR (dang ky)) nang x hoi. ((hieu vien) OR (hieu viec)) cac tuc va thanh tai cua te*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu ((san ky) or (dang ky)) nang x hoi. ((hieu vien) OR (hieu viec)) cac tuc va thanh tai cua te*".