Perhaps you should try some spelling variations:
van trieu » tan trieu, van tieu, van hieu
van triet » va triet, van thiet, hanh triet
cach tu » cach thuc
kinh tu » kinh te, tinh tu, dinh tu
tu cach » tu cac
tu nano » truc nano
xuc va » duc va, tuc va, xac va
luc va » duc va, tuc va, loc va
va cam » va cham, va cac, va cao
nano x » nano 1, nano o
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu cach tu nano x hoi. lieu va cam ((xuc va) or (luc va)) kinh tu ((van triet) OR (van trieu))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu cach tu nano x hoi. lieu va cam ((xuc va) OR (luc va)) kinh tu ((van triet) OR (van trieu))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu cach tu nano x hoi. lieu va cam ((xuc va) or (luc va)) kinh tu ((van triet) OR (van trieu))*".