Perhaps you should try some spelling variations:
operation instrumentation » applications instrumentation, therapy instrumentation, modern instrumentation
instrumentation theory » instrumentation methods, instrumentation https, instruction theory
theory division » theory decision, theory revision, theorems division
bases linear » based linear, basics linear, games linear
basic linear » quasi linear, basic life
mass linear » class linear, less linear, basics linear

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

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