Ohcanbohtosat - (( bibliography 20th century ) OR ((( biography 20th century ) OR ( geography 20th century ))))~
Ozuin - (( bibliography 20th century ) OR ((( biography 20th century ) OR ( geography 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: "(( bibliography 20th century ) OR ((( biography 20th century ) OR ( geography 20th century ))))~".
- Joker-mearkkaid geavahemiin sáhtát gávdnat earálágán sátnehámiid: (( bibliography 20th century ) OR ((( biography 20th century ) OR ( geography 20th century ))))*.