Perhaps you should try some spelling variations:
su triet » su viet, su tien, ve triet
bach van » bach dan, cach van, bach dang
van tuan » van quan, van ban, anh tuan
hanh ki » hanh ky, hanh kien, thanh kim
dua ban » dia ban, cua ban, qua ban
su bach » vu bach, su sach, huu bach
hieu ve » hieu van
tuan xa » quan xa, tan xa, toan xa
hieu va » lieu va, hieu qua

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 bach van tuan xa hoi. ((hieu ve) OR (hieu va)) chay dua ban ((hanh ki) OR (hanh vi)) su triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su bach van tuan xa hoi. ((hieu ve) OR (hieu va)) chay dua ban ((hanh ki) or (hanh vi)) su triet~".
• Adding a wildcard symbol may retrieve word variants: su bach van tuan xa hoi. ((hieu ve) OR (hieu va)) chay dua ban ((hanh ki) or (hanh vi)) su triet*.