Ohcanbohtosat - (( geography 20th century ) OR ( ((bibliography 20th) OR (biography 20th)) century ))~
Ozuin - (( geography 20th century ) OR ( ((bibliography 20th) OR (biography 20th)) century ))~ - eai gávdnon bohtosat.
Sáhtát oažžut lasi bohtosiid go hábmet iežat ohcama.
- Sánit AND, OR ja NOT sáhttet moivet ohcama; geahččal lasihit aisttonmearkkaid ohcansániid birra: "(( geography 20th century ) OR ( ((bibliography 20th) OR (biography 20th)) century ))~".
- Joker-mearkkaid geavahemiin sáhtát gávdnat earálágán sátnehámiid: (( geography 20th century ) OR ( ((bibliography 20th) OR (biography 20th)) century ))*.