Ngā hua rapu - (( materials health (services. OR devices.) ) OR ( materials health services. ))~
Kāore tō rapu - (( materials health (services. OR devices.) ) OR ( materials health services. ))~ - i ōrite ki tētahi rauemi.
Me whakamātau pea he takikupu rerekē:
- materials health »
Ka taea pea ētahi hua anō mā te whakakē i tō uiui rapu.
- Kā taea pea e ngā kupu AND, OR me NOT tō rapu te whakapōraru; tāpiritia he tohukī: "(( materials health (services. OR devices.) ) OR ( materials health services. ))~".
- Mā te tāpiri tohu kārimākā e tikia atu ai pea ngā rerekētanga ā-rohe: (( materials health (services. OR devices.) ) OR ( materials health services. ))*.