Perhaps you should try some spelling variations:
ve triet » va trien, su triet
hieu van » hieu va, thien van, lieu va
sach tu » sach thu, cach tu, sach ty
tinh tu » trinh tu, tinh thua, tinh yeu
kinh tu » kinh te, dinh tu, sinh tu
te sach » toc sach
lam xuc » lam duoc
tu nano » truc nano
nano o » nano 1, nano cuo, nano mot
o hoi » co hoi, o hoc, o hai

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach tu nano o hoi. hieu van ((lam xuc) or (cam xuc)) va ((kinh tu) OR (tinh tu)) ve triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach tu nano o hoi. hieu van ((lam xuc) OR (cam xuc)) va ((kinh tu) OR (tinh tu)) ve triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach tu nano o hoi. hieu van ((lam xuc) or (cam xuc)) va ((kinh tu) OR (tinh tu)) ve triet".
• Adding a wildcard symbol may retrieve word variants: te sach tu nano o hoi. hieu van ((lam xuc) or (cam xuc)) va ((kinh tu) OR (tinh tu)) ve triet*.