Torthaí cuardaigh - (((( bibliography 20th century ) OR ( biography 20th century ))) OR ( geography 20th century ))~
Do chuardach - (((( bibliography 20th century ) OR ( biography 20th century ))) OR ( geography 20th century ))~ - níor mheaitseáil seo acmhainn ar bith.
B'fhéidir go mbeifeá in ann tuilleadh torthaí a fháil ach d’iarratas cuardaigh a bheachtú.
- Seans go gcuirfeadh na focail AGUS, NÓ agus GAN mearbhall ar an gcuardach; déan iarracht comharthaí athfhriotail a úsáid: "(((( bibliography 20th century ) OR ( biography 20th century ))) OR ( geography 20th century ))~".
- Má chuirtear saoróg leis, seans go bhfaighfear malairtí focail: (((( bibliography 20th century ) OR ( biography 20th century ))) OR ( geography 20th century ))*.