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

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