Ngā hua rapu - "((\"soil conservation\") OR (\"soil (conservation\" OR construction\")))"
Kāore tō rapu - "((\"soil conservation\") OR (\"soil (conservation\" OR construction\")))" - 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: "\"((\\"soil conservation\\") OR (\\"soil (conservation\\" OR construction\\")))\"".
- Mā te tango tohukī e tukua ai pea he rapu whānui ake: (( soil conservation ) OR ( soil (conservation OR construction ))).