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