Perhaps you should try some spelling variations:
khien bach » vien bach, khien bang, thien hach
cua triet » cua viet, su triet, va triet
bach tuoc » sach duoc, sach nuoc
nang xa » lang xa, nang ma, mang xa
va danh » va dinh, va hanh, dia danh
sac ky » cac ky, sai ky
va dan » ca dan, va dao, va dau
du cua » duy cua, dau cua, dum 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) or (nang x)) hoi. dieu khien bach tuoc ((va danh) OR (va dan)) du cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sac ky ((nang xa) OR (nang x)) hoi. dieu khien bach tuoc ((va danh) OR (va dan)) du cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sac ky ((nang xa) or (nang x)) hoi. dieu khien bach tuoc ((va danh) OR (va dan)) du cua triet".
• Adding a wildcard symbol may retrieve word variants: su sac ky ((nang xa) or (nang x)) hoi. dieu khien bach tuoc ((va danh) OR (va dan)) du cua triet*.