Perhaps you should try some spelling variations:
bieu hien » dieu hien, dieu khien, bien phien
hien bach » vien bach, thien hach, hien hanh
bach tuoc » sach duoc, sach nuoc
va dinh » van dinh, va kinh, va tinh
dum cua » duy cua, dam cua, dung cua
va danh » va dan, va hanh, dia danh
nang xa » nang x, lang xa, nang ma
sac ky » cac ky, sai ky
du cua » duy cua, dau cua, hu cua
su sac » su sach, su cac, su xac

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sac ky nang xa hoi. bieu hien bach tuoc ((va danh) OR (va dinh)) ((du cua) or (dum cua)) viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sac ky nang xa hoi. bieu hien bach tuoc ((va danh) OR (va dinh)) ((du cua) OR (dum cua)) viet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sac ky nang xa hoi. bieu hien bach tuoc ((va danh) OR (va dinh)) ((du cua) or (dum cua)) viet".
• Adding a wildcard symbol may retrieve word variants: su sac ky nang xa hoi. bieu hien bach tuoc ((va danh) OR (va dinh)) ((du cua) or (dum cua)) viet*.