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.
- 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 )~.
- Joker-mearkkaid geavahemiin sáhtát gávdnat earálágán sátnehámiid: "(environmental OR environment) (production" OR introduction")*.