Ngā hua rapu - (("twenty-21st century forecasting.") OR ("twenty-20th century forecasting."))~
Kāore tō rapu - (("twenty-21st century forecasting.") OR ("twenty-20th century forecasting."))~ - i ōrite ki tētahi rauemi.
Me whakamātau pea he takikupu rerekē:
- "twenty-21st century forecasting." »
 - "twenty-20th century forecasting." »
 
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: "((\"twenty-21st century forecasting.\") OR (\"twenty-20th century forecasting.\"))~".
 - Mā te tango tohukī e tukua ai pea he rapu whānui ake: (( twenty-21st century forecasting. ) OR ( twenty-20th century forecasting. ))~.
 - Mā te tāpiri tohu kārimākā e tikia atu ai pea ngā rerekētanga ā-rohe: (("twenty-21st century forecasting.") OR ("twenty-20th century forecasting."))*.