Perhaps you should try some spelling variations:
su triet » su viet, su tien, ve triet
ban hanh » ban hang
van nang » van quang, van ban, van dong
xuc ban » duc ban, cuc ban, quoc ban
su sach » so sach, vu sach
nang xa » nang x, lang xa, nang ma
ve cac » va cac, vien cac
ve cam » ve cham, va cam, ve cai
vi su » va su, ve su, ki su

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (vu bach)) van nang xa hoi. hieu ((ve cam) OR (ve cac)) xuc ban hanh vi su triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) or (vu bach)) van nang xa hoi. hieu ((ve cam) OR (ve cac)) xuc ban hanh vi su triet~".
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (vu bach)) van nang xa hoi. hieu ((ve cam) OR (ve cac)) xuc ban hanh vi su triet*.