Perhaps you should try some spelling variations:
ve triet » va trien, su triet
sach tru » sach truc, sach thu, sach tu
tru nang » tra nang, tri nang, truc nano
chieu tu » chieu tro, lieu tu, chu tu
cham duc » pham duc, pham duy, phan duc
hanh ve » hanh vi, hanh va, hanh kem
hanh de » hanh kem
so sach » so sanh, bo sach, co sach
nang xa » nang x, lang xa, nang ma

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 tru nang xa hoi. chieu tu ((cham duc) or (cham soc)) van ((hanh de) or (hanh ve)) ve triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach tru nang xa hoi. chieu tu ((cham duc) OR (cham soc)) van ((hanh de) OR (hanh ve)) ve triet.
• Adding a wildcard symbol may retrieve word variants: so sach tru nang xa hoi. chieu tu ((cham duc) or (cham soc)) van ((hanh de) or (hanh ve)) ve triet*.