Perhaps you should try some spelling variations:
doanh van » doan van, doanh va, doanh ban
te sach » toc sach
sach ty » sach y, sach tu, sach thu
ty nang » ky nang, ty xang, ty hang
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va, hieu van
van cua » vang cua, ban cua, dan cua
cua tre » cua te, cuu tre, cua triet
ve cac » va cac, vien cac
tuc va » thuc va, truc va, duc va

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 ty nang xa hoi. hieu ve cac ((tuc va) or (tuc xa)) doanh van cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ty nang xa hoi. hieu ve cac ((tuc va) OR (tuc xa)) doanh van cua tre.
• Adding a wildcard symbol may retrieve word variants: te sach ty nang xa hoi. hieu ve cac ((tuc va) or (tuc xa)) doanh van cua tre*.