Perhaps you should try some spelling variations:
vay doanh » van doanh, ly doanh, voi doanh
doanh van » doan van, doanh va, doanh ban
su sach » so sach, vu sach
luc vay » luc va, luc van, luoc van
ky sang » ky nang, ky dang, duy sang
van cua » vang cua, ban cua, dan cua
ky tang » ky nang, ky dang, kho tang
lap hai » lap tai, lap lai, lap hoat
hieu ve » hieu van
hieu va » lieu va, hieu qua
cam luc » cam xuc, cau luc
cua te » cua tu

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: su sach ((ky sang) or (ky tang)) lap hai. ((hieu ve) or (hieu va)) cam luc vay doanh van cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ((ky sang) OR (ky tang)) lap hai. ((hieu ve) OR (hieu va)) cam luc vay doanh van cua te.
• Adding a wildcard symbol may retrieve word variants: su sach ((ky sang) or (ky tang)) lap hai. ((hieu ve) or (hieu va)) cam luc vay doanh van cua te*.