Ngā hua rapu - (((("bibliography 20th century") OR ("biography 20th century"))) OR ("geography 20th century"))~
Kāore tō rapu - (((("bibliography 20th century") OR ("biography 20th century"))) OR ("geography 20th century"))~ - 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: "((((\"bibliography 20th century\") OR (\"biography 20th century\"))) OR (\"geography 20th century\"))~".
- Mā te tango tohukī e tukua ai pea he rapu whānui ake: (((( bibliography 20th century ) OR ( biography 20th century ))) OR ( geography 20th century ))~.
- Mā te tāpiri tohu kārimākā e tikia atu ai pea ngā rerekētanga ā-rohe: (((("bibliography 20th century") OR ("biography 20th century"))) OR ("geography 20th century"))*.