Perhaps you should try some spelling variations:
doanh van » doan van, doanh va, doanh ban
va doanh » van doanh, vay doanh, va danh
tu sach » thu sach, su sach, te sach
ky mang » ky nang, ke mang, ky tang
van cua » vang cua, ban cua, dan cua
ky dang » ky nang, ky danh
may hoa » may khoa, ma hoa, day hoa
hieu ve » hieu van
hieu va » lieu va, hieu qua
cua te » cua tu
xuc va » duc va, tuc va, luc va

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach ((ky mang) OR (ky dang)) may hoa. ((hieu ve) or (hieu va)) cam xuc va doanh van cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ((ky mang) OR (ky dang)) may hoa. ((hieu ve) OR (hieu va)) cam xuc va doanh van cua te.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ((ky mang) OR (ky dang)) may hoa. ((hieu ve) or (hieu va)) cam xuc va doanh van cua te".
• Adding a wildcard symbol may retrieve word variants: tu sach ((ky mang) OR (ky dang)) may hoa. ((hieu ve) or (hieu va)) cam xuc va doanh van cua te*.