Question

What strong words and phrases could be substituted for "working outside," "found," and "come back

Answer 1

working outside: gardening, busy, extra time, recess
found: discovered, initiate, located, happened upon,searched out, develop
come back: regret, flashback, bounce
(different meanings beacause of verb, noun, etc.)

Answer 2

i might not be 100℅ right. But possibly Establish or Orginate for found.

And i couldnt find very strong words for come back, but returned. As for working outside is unknown for me. Hope this helps!