Perhaps you should try some spelling variations:
khien bach » vien bach, khien bang, thien hach
bach tuoc » sach duoc, sach nuoc
su triet » su viet, su tien, ve triet
nang xa » nang x, nang ma, mang xa
lang xa » lang ha, dang xay, lang van
tuoc va » thuoc va, nuoc va, duoc va
danh du » danh dau, dinh du, anh du
danh tu » anh tu, doanh thu
su sac » su sach, su cac, su xac
sac ky » cac ky, sai ky

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 (lang xa)) hoi. dieu khien bach tuoc va ((danh du) or (danh tu)) su triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sac ky ((nang xa) OR (lang xa)) hoi. dieu khien bach tuoc va ((danh du) OR (danh tu)) su triet.
• Adding a wildcard symbol may retrieve word variants: su sac ky ((nang xa) or (lang xa)) hoi. dieu khien bach tuoc va ((danh du) or (danh tu)) su triet*.