Ohcanbohtosat - engineering ((laboratory bureaus) OR (laboratories bureaus)).*
Ozuin - engineering ((laboratory bureaus) OR (laboratories bureaus)).* - eai gávdnon bohtosat.
Sáhtát oažžut lasi bohtosiid go hábmet iežat ohcama.
- Seđđon ohcamiin sáhttet gávdnot ohcanbohtosat, main leat seammasullasaš sánit: engineering ((laboratory bureaus) OR (laboratories bureaus)).~.
- Sánit AND, OR ja NOT sáhttet moivet ohcama; geahččal lasihit aisttonmearkkaid ohcansániid birra: "engineering ((laboratory bureaus) OR (laboratories bureaus)).*".