Ohcanbohtosat - (("geography 20th century") OR ("bibliography 20th century"))
Ozuin - (("geography 20th century") OR ("bibliography 20th century")) - eai gávdnon bohtosat.
Gánnáha geahččalit iešguđetlágán čállinhámiid:
- "bibliography 20th century" »
- "geography 20th century" »
Geahččal viiddidit ohcama: Buot deaivamat.
Sáhtát oažžut lasi bohtosiid go hábmet iežat ohcama.
- Seđđon ohcamiin sáhttet gávdnot ohcanbohtosat, main leat seammasullasaš sánit: (("geography 20th century") OR ("bibliography 20th century"))~.
- Sánit AND, OR ja NOT sáhttet moivet ohcama; geahččal lasihit aisttonmearkkaid ohcansániid birra: "((\"geography 20th century\") OR (\"bibliography 20th century\"))".
- Sáhtát oažžut eanet bohtosiid go sihkut aisttonmearkkaid: (( geography 20th century ) OR ( bibliography 20th century )).
- Joker-mearkkaid geavahemiin sáhtát gávdnat earálágán sátnehámiid: (("geography 20th century") OR ("bibliography 20th century"))*.