Perhaps you should try some spelling variations:
doanh van » doan van, doanh va, doanh ban
danh sai » dung sai, danh bat, danh dau
hieu ve » hieu va, hieu van
cam luc » cam xuc, cau luc
cuu tre » cua tre, cau tren, cau treo
sac ky » cac ky
ve cam » ve cham, ve cac, va cam
luc va » duc va, tuc va, loc 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: tu ((sac ky) OR (sai ky)) nang x hoi. hieu ve cam luc va ((doanh van) or (danh sai)) cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ((sac ky) OR (sai ky)) nang x hoi. hieu ve cam luc va ((doanh van) OR (danh sai)) cuu tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sac ky) OR (sai ky)) nang x hoi. hieu ve cam luc va ((doanh van) or (danh sai)) cuu tre".
• Adding a wildcard symbol may retrieve word variants: tu ((sac ky) OR (sai ky)) nang x hoi. hieu ve cam luc va ((doanh van) or (danh sai)) cuu tre*.