Torthaí cuardaigh - (( bibliography 20th century ) OR ((( geography 20th century ) OR ( biography 20th century ))))~
Do chuardach - (( bibliography 20th century ) OR ((( geography 20th century ) OR ( biography 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 ((( geography 20th century ) OR ( biography 20th century ))))~".
- Má chuirtear saoróg leis, seans go bhfaighfear malairtí focail: (( bibliography 20th century ) OR ((( geography 20th century ) OR ( biography 20th century ))))*.