Perhaps you should try some spelling variations:
su triet » su viet, su tien, ve triet
cua viet » ca viet, hoa viet, cua vat
thu nang » thi nang, thu hang, thu bang
van hang » van khang, van hoang, van thang
tuc van » thuc van, truc van, tuc va
hang di » hang doi, hang vi, hang dien
so sach » so sanh, bo sach, hoc sach
hieu va » lieu va, hieu qua
nang xa » nang x, lang xa, nang ma
co sach » bo sach, cuon sach, hoc sach
cam tuc » cam xuc, cam tu, nam thuc
va cam » va cham, va cac, va cao

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((so sach) OR (co sach)) thu nang xa hoi. hieu va cam tuc van hang di ((cua viet) or (su triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((so sach) OR (co sach)) thu nang xa hoi. hieu va cam tuc van hang di ((cua viet) OR (su triet))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((so sach) OR (co sach)) thu nang xa hoi. hieu va cam tuc van hang di ((cua viet) or (su triet))*".