Perhaps you should try some spelling variations:
ve triet » va trien, su triet
ban hanh » ban hang
cham duc » pham duc, pham duy, phan duc
chieu tu » chieu tro, lieu tu, chu tu
tru nang » tri nang, truc nano, thi nang
tra nang » thi nang, kha nang, da nang
hanh de » hanh ve, hanh kem
su sach » so sach, vu sach

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

• Performing a fuzzy search may retrieve terms with similar spellings: su sach ((tru nang) OR (tra nang)) xa hoi. chieu tu ((cham duc) or (cham soc)) ban hanh de ve triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ((tru nang) OR (tra nang)) xa hoi. chieu tu ((cham duc) OR (cham soc)) ban hanh de ve triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ((tru nang) OR (tra nang)) xa hoi. chieu tu ((cham duc) or (cham soc)) ban hanh de ve triet".
• Adding a wildcard symbol may retrieve word variants: su sach ((tru nang) OR (tra nang)) xa hoi. chieu tu ((cham duc) or (cham soc)) ban hanh de ve triet*.