Ngā hua rapu - (("drugs: educacion, prevencion AND policy*") OR ("drugs: reduccion, prevencion AND policy*"))*
Kāore tō rapu - (("drugs: educacion, prevencion AND policy*") OR ("drugs: reduccion, prevencion AND policy*"))* - i ōrite ki tētahi rauemi.
Ka taea pea ētahi hua anō mā te whakakē i tō uiui rapu.
- Mā te whakahaere i te rapu makaro e tīkina atu ai pea ngā kupu he ōrite te takikupu: (("drugs: educacion, prevencion AND policy*") OR ("drugs: reduccion, prevencion AND policy*"))~.
- Kā taea pea e ngā kupu AND, OR me NOT tō rapu te whakapōraru; tāpiritia he tohukī: "((\"drugs: educacion, prevencion AND policy*\") OR (\"drugs: reduccion, prevencion AND policy*\"))*".
- Mā te tango tohukī e tukua ai pea he rapu whānui ake: (( drugs: educacion, prevencion AND policy* ) OR ( drugs: reduccion, prevencion AND policy* ))*.