Ngā hua rapu - (((( walter construction ) OR ( water conservation ))) OR ( expert consultation ))~
Kāore tō rapu - (((( walter construction ) OR ( water conservation ))) OR ( expert consultation ))~ - i ōrite ki tētahi rauemi.
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: "(((( walter construction ) OR ( water conservation ))) OR ( expert consultation ))~".
- Mā te tāpiri tohu kārimākā e tikia atu ai pea ngā rerekētanga ā-rohe: (((( walter construction ) OR ( water conservation ))) OR ( expert consultation ))*.