Perhaps you should try some spelling variations:
bieu hien » dieu hien, dieu khien, bien phien
hien sach » dien sach, kien sach, thien hach
sach dao » lanh dao
va trinh » van trinh, lap trinh, qua trinh
te sach » toc sach
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
va tinh » may tinh
van huu » van huy, van hau, san huu
huu tre » huu tri, cuu tre, huu them

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 ky nang xa hoi. bieu hien sach dao ((va trinh) OR (va tinh)) van huu tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky nang xa hoi. bieu hien sach dao ((va trinh) OR (va tinh)) van huu tre".
• Adding a wildcard symbol may retrieve word variants: te sach ky nang xa hoi. bieu hien sach dao ((va trinh) OR (va tinh)) van huu tre*.