| track down(verb, phrasal verb, action, study, act) |
| turn up(verb, phrasal verb, action, study, act) |
| Gordian knot(noun, expression, issue, challenge, case) |
| hot water(noun, expression, issue, challenge, case) |
| pay dirt(noun, expression, discovery, finding, spotting) |
| sticky wicket(noun, expression, issue, challenge, case) |
| treasure trove(noun, expression, discovery, finding, spotting) |
| ascertain(verb, action, study, act, understanding) |
| awareness(noun, discovery, finding, spotting, detection) |
| brainteaser(noun, issue, challenge, case, matter) |
| breakthrough(noun, discovery, finding, spotting, detection) |
| case(noun, issue, challenge, matter) |
| catch(noun, issue, challenge, case, matter) |
| challenge(noun, issue, case, matter) |
| conundrum(noun, issue, challenge, case, matter) |
| corner(noun, issue, challenge, case, matter) |
| creation(noun, discovery, finding, spotting, detection) |
| crux(noun, issue, challenge, case, matter) |
| descry(verb, action, study, act, understanding) |
| detect(verb, action, study, act, understanding) |