Perhaps you should try some spelling variations:
doanh van » doan van, doanh va, doanh ban
toc sach » hoc sach, doc sach, thuoc sach
danh bat » doanh bat, anh bai, dinh ba
hieu van » hieu va, thien van, lieu va
van cam » van nam, van lam, van cau
cam tuc » cam xuc, cam tu, nam thuc
nang xa » nang x, lang xa, nang ma
cuu tre » cua tre, cau tren, cau treo
tuc va » thuc va, truc va, tuc xa
y nang » ky nang, ly nang, v nang

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((te sach) or (toc sach)) y nang xa hoi. hieu van cam tuc va ((doanh van) or (danh bat)) cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te sach) OR (toc sach)) y nang xa hoi. hieu van cam tuc va ((doanh van) OR (danh bat)) cuu tre.
• Adding a wildcard symbol may retrieve word variants: ((te sach) or (toc sach)) y nang xa hoi. hieu van cam tuc va ((doanh van) or (danh bat)) cuu tre*.