Perhaps you should try some spelling variations:
bieu hien » dieu hien, dieu khien, bien phien
hien bach » vien bach, thien hach, hien hanh
bach nuoc » bach tuoc, sach nuoc, bich ngoc
so sach » so sanh, bo sach, co sach
sach ky » sac ky, sach y, sach ty
nang xa » nang x, lang xa, nang ma
ca dan » ca dao
cua tu » cua tuc, cua su, cua cu

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "so sach ky nang xa hoi. bieu hien bach nuoc ((ca dan) OR (cac dan)) dai cua tu~".
• Adding a wildcard symbol may retrieve word variants: so sach ky nang xa hoi. bieu hien bach nuoc ((ca dan) OR (cac dan)) dai cua tu*.