Perhaps you should try some spelling variations:
doanh van » doan van, doanh va, doanh ban
hieu van » hieu va, thien van, lieu va
thu sach » thuat sach, thuoc sach, thu hoach
thu nang » thi nang, thu hang, thu bang
va doanh » van doanh, vay doanh, va danh
cham xuc » cam xuc, chat xuc, cham soc
tu sach » su sach, te sach, tu cach
van cuu » van cau, van chu, van cu
cuu tre » cua tre, cau tren, cau treo
hieu ve » hieu va
nang xa » nang x, lang xa, nang ma
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) or (thu sach)) thu nang xa hoi. ((hieu ve) or (hieu van)) cham xuc va doanh van cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (thu sach)) thu nang xa hoi. ((hieu ve) OR (hieu van)) cham xuc va doanh van cuu tre.
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (thu sach)) thu nang xa hoi. ((hieu ve) or (hieu van)) cham xuc va doanh van cuu tre*.