Perhaps you should try some spelling variations:
sach thue » sach thu, sach thieu, sach tham
thue nang » thien nang, thuat nang, thi nang
doanh van » doan van, doanh va, doanh ban
va doanh » van doanh, vay doanh, va danh
tu sach » thu sach, su sach, te sach
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va, hieu van
xuc va » duc va, tuc va, luc va
van cu » van cau, van chu, van cua
cu tre » cu tren, cua tre, cuu tre

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 xa hoi. ((hieu ve) or (hieu qua)) cam xuc va doanh van cu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach thue nang xa hoi. ((hieu ve) OR (hieu qua)) cam xuc va doanh van cu tre.
• Adding a wildcard symbol may retrieve word variants: tu sach thue nang xa hoi. ((hieu ve) or (hieu qua)) cam xuc va doanh van cu tre*.