Perhaps you should try some spelling variations:
toc sach » hoc sach, doc sach, thuoc sach
van hanh » van thanh, ban hanh, van anh
hanh tri » thanh tri, hanh tai, hanh trinh
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
van cam » van nam, van lam, van dam
van cau » van dau, van hau, van chat
xuc van » duc van, luc van, xuc ban
cua te » cua tu

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 ky nang xa hoi. hieu ((van cam) OR (van cau)) xuc van hanh tri cua te~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc sach ky nang xa hoi. hieu ((van cam) OR (van cau)) xuc van hanh tri cua te".
• Adding a wildcard symbol may retrieve word variants: toc sach ky nang xa hoi. hieu ((van cam) OR (van cau)) xuc van hanh tri cua te*.