Ohcanbohtosat - "(environmental OR environment) (production" OR introduction")*
Ozuin - "(environmental OR environment) (production" OR introduction")* - eai gávdnon bohtosat.
Sáhtát oažžut lasi bohtosiid go hábmet iežat ohcama.
- Seđđon ohcamiin sáhttet gávdnot ohcanbohtosat, main leat seammasullasaš sánit: "(environmental OR environment) (production" OR introduction")~.
- Sánit AND, OR ja NOT sáhttet moivet ohcama; geahččal lasihit aisttonmearkkaid ohcansániid birra: "\"(environmental OR environment) (production\" OR introduction\")*".
- Sáhtát oažžut eanet bohtosiid go sihkut aisttonmearkkaid: (environmental OR environment) (production OR introduction )*.