Perhaps you should try some spelling variations:
invariant state » invariant states, invariant shape, invariant spaces
bavarian state » bavaria states, bavarian case
bayesian state » bayesian shape, bayesian spatial, bayesian student

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ((((bavarian state) OR (invariant state))) OR (bayesian state)) orchestra.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((bavarian state) OR (invariant state))) or (bayesian state)) orchestra".
• Adding a wildcard symbol may retrieve word variants: ((((bavarian state) OR (invariant state))) or (bayesian state)) orchestra*.