Perhaps you should try some spelling variations:
doanh van » doan van, doanh va, doanh ban
va doanh » van doanh, vay doanh, va danh
hieu ve » hieu va, hieu van
van cua » vang cua, ban cua, dan cua
cac tuc » cac toc, cac tu, cac tac
cua tre » cua te, cuu tre, cua triet
ky danh » ky anh
ky dang » ky nang
ky tang » ky nang, kho tang, ky trong
ve cac » va cac, vien cac
tuc va » thuc va, truc va, tuc xa
te sac » te sach, te cac, te san

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 tang) or (((ky dang) OR (ky danh)))) ma hoa. hieu ve cac tuc va doanh van cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sac ((ky tang) OR (((ky dang) OR (ky danh)))) ma hoa. hieu ve cac tuc va doanh van cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sac ((ky tang) or (((ky dang) OR (ky danh)))) ma hoa. hieu ve cac tuc va doanh van cua tre*".