Ohcanbohtosat - (( Twenty-21st century Forecasting. ) OR ( Twenty-16th century Forecasting. ))
Ozuin - (( Twenty-21st century Forecasting. ) OR ( Twenty-16th century Forecasting. )) - eai gávdnon bohtosat.
Gánnáha geahččalit iešguđetlágán čállinhámiid:
- 21st century »
 - 16th century »
 
Sáhtát oažžut lasi bohtosiid go hábmet iežat ohcama.
- Seđđon ohcamiin sáhttet gávdnot ohcanbohtosat, main leat seammasullasaš sánit: (( Twenty-21st century Forecasting. ) OR ( Twenty-16th century Forecasting. ))~.
 - Sánit AND, OR ja NOT sáhttet moivet ohcama; geahččal lasihit aisttonmearkkaid ohcansániid birra: "(( Twenty-21st century Forecasting. ) OR ( Twenty-16th century Forecasting. ))".
 - Joker-mearkkaid geavahemiin sáhtát gávdnat earálágán sátnehámiid: (( Twenty-21st century Forecasting. ) OR ( Twenty-16th century Forecasting. ))*.