QUESTION: Fix punctuation: Allows users to lend their expertise by adding handpicked results to search queries ensuring that relevant results appear at the top for certain keywords
ANS: Allows users to lend their expertise by adding hand-picked results to search queries, ensuring that relevant results appear at the top for certain keywords.

QUESTION: Fix punctuation: Similarly the result for the Bosch Group as a whole improved once again in 2015
ANS: Similarly, the result for the Bosch Group as a whole improved once again in 2015.

QUESTION: Fix punctuation: This instrument is as good as new as carries no signs of wear in the rotary valves the restoring was very successful
ANS: This instrument is as good as new, as carries no signs of wear in the rotary valves, the restoring was very successful.

QUESTION: Fix punctuation: After that she was a teacher in country schools in both North and South Dakota She took courses with the State Normal School Moorhead
ANS:
After that she was a teacher in country schools in both North and South Dakota. She took courses with the State Normal School, Moorhead.