Perhaps you should try some spelling variations:
thue nang » thien nang, thuat nang, chuc nang
doanh van » doan van, doanh va, doanh ban
thi nang » thi cong, ki nang, thi hanh
va doanh » van doanh, vay doanh, va danh
tu sach » thu sach, su sach, te sach
van cuu » van cau, van chu, van cu
hieu ve » hieu va, hieu van
cuu tre » cua tre, cau tren, cau treo
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 ((thue nang) OR (thi nang)) xa hoi. ((hieu ve) or (hieu qua)) cam xuc va doanh van cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ((thue nang) OR (thi nang)) xa hoi. ((hieu ve) OR (hieu qua)) cam xuc va doanh van cuu tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach ((thue nang) OR (thi nang)) xa hoi. ((hieu ve) or (hieu qua)) cam xuc va doanh van cuu tre".
• Adding a wildcard symbol may retrieve word variants: tu sach ((thue nang) OR (thi nang)) xa hoi. ((hieu ve) or (hieu qua)) cam xuc va doanh van cuu tre*.