Perhaps you should try some spelling variations:
bach nuoc » bach tuoc, sach nuoc, bich ngoc
hieu vien » hieu hien, hieu viec, thieu nien
van hanh » van thanh, van anh, van ban
ban hanh » ban hang
su triet » su viet, su tien, ve triet
su sach » so sach, vu sach
sach ky » sac ky, sach y, sach ty
ky lang » ky nang, ky dang, ky tang
lang xa » lang ha, dang xay, lang van
vi su » va su, ve su, ki su

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach ky lang xa hoi. hieu vien bach nuoc ((van hanh) or (ban hanh)) vi su triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky lang xa hoi. hieu vien bach nuoc ((van hanh) OR (ban hanh)) vi su triet.
• Adding a wildcard symbol may retrieve word variants: su sach ky lang xa hoi. hieu vien bach nuoc ((van hanh) or (ban hanh)) vi su triet*.