Perhaps you should try some spelling variations:
doanh van » doan van, doanh va, doanh ban
nang ma » tang ma, nang cao, mang may
sang ma » tang ma, sang tao, mang may
hieu ve » hieu va, hieu van
van cua » vang cua, ban cua, dan cua
te sac » te sach, te cac, te san
sac ky » cac ky, sai ky
ve cam » ve cham, ve cac, va cam
xuc va » tuc va, luc va, xac va
cua tu » cua tuc, cua su, cua cu

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sac ky ((nang ma) or (sang ma)) hoi. hieu ve cam ((xuc va) OR (duc va)) doanh van cua tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sac ky ((nang ma) OR (sang ma)) hoi. hieu ve cam ((xuc va) OR (duc va)) doanh van cua tu*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sac ky ((nang ma) or (sang ma)) hoi. hieu ve cam ((xuc va) OR (duc va)) doanh van cua tu*".