Ngā hua rapu - ((\ water construction\ ) OR (\ ((water conservation) OR (expert consultation))\ ))~

Kāore tō rapu - ((\ water 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: "((\ water construction\ ) OR (\ ((water conservation) OR (expert consultation))\ ))~".
Mā te tāpiri tohu kārimākā e tikia atu ai pea ngā rerekētanga ā-rohe: ((\ water construction\ ) OR (\ ((water conservation) OR (expert consultation))\ ))*.