Perhaps you should try some spelling variations:
doanh van » doan van, doanh va, doanh ban
cua triet » cua viet, su triet, va triet
toc sach » hoc sach, doc sach, thuoc 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
cac toc » cac toi, cac nuoc, cac thoi
cuu tre » cua tre, cau tren, cau treo
ve cac » va cac, vien cac
toc xa » tuc xa, toc ta, hoc xa
anh va » hanh va

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

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