Perhaps you should try some spelling variations:
ionization instrumentation » operation instrumentation, radiation instrumentation, collection instrumentation
https session » heaps session, http sessions, nets session
basics clear » basic nuclear
basic linear » quasi linear, basic life
mass linear » bases linear, class linear, less linear

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ionization instrumentation https session ((((basics clear) or (basic linear))) or (mass linear))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ionization instrumentation https session ((((basics clear) OR (basic linear))) OR (mass linear)).
• Adding a wildcard symbol may retrieve word variants: ionization instrumentation https session ((((basics clear) or (basic linear))) or (mass linear))*.