Perhaps you should try some spelling variations:
doanh thai » doanh tai, doanh thanh, doanh nhan
cau treo » cau theo, cau tren, cau triet
thai cau » thai cao, toan cau, thai van
ve doanh » va doanh, de doanh, te doanh
hieu va » lieu va, hieu qua
sang ky » sang kyo, dang ky, tang ky
dieu vu » dien vu, dieu va, dieu cua
san ky » van ky, dan ky, ban ky
cuu ve » cuu va
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: thu ((san ky) OR (sang ky)) nang x hoi. ((dieu vu) or (hieu va)) cap cuu ve doanh thai cau treo~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu ((san ky) OR (sang ky)) nang x hoi. ((dieu vu) OR (hieu va)) cap cuu ve doanh thai cau treo*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu ((san ky) OR (sang ky)) nang x hoi. ((dieu vu) or (hieu va)) cap cuu ve doanh thai cau treo*".