Perhaps you should try some spelling variations:
su triet » su viet, su tien, ve triet
van hanh » van thanh, ban hanh, van anh
van nang » van quang, van ban, van dong
xuc van » duc van, luc van, vuc van
hieu va » lieu va, hieu qua
su sach » so sach
nang xa » nang x, lang xa, nang ma
vu sach » vu bach, vu khach
hieu ve » hieu van
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 sach)) van nang xa hoi. ((hieu ve) OR (hieu va)) cam xuc van hanh vi su triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) or (vu sach)) van nang xa hoi. ((hieu ve) OR (hieu va)) cam xuc van hanh vi su triet~".
• Adding a wildcard symbol may retrieve word variants: ((su sach) or (vu sach)) van nang xa hoi. ((hieu ve) OR (hieu va)) cam xuc van hanh vi su triet*.