Perhaps you should try some spelling variations:
ionization instrumentation » operation instrumentation, radiation instrumentation, collection instrumentation
https division » fats division
bases linear » based linear, basics linear, basic linear
ansys linear » less linear, mass linear
class linear » less linear, mass linear, class library

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 division ((bases linear) OR (((ansys linear) OR (class linear))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ionization instrumentation https division ((bases linear) OR (((ansys linear) OR (class linear))))".
• Adding a wildcard symbol may retrieve word variants: ionization instrumentation https division ((bases linear) OR (((ansys linear) OR (class linear))))*.