| Investigate thoroughly |
Universal |
13 Sep 2024 |
| Muster all one's resources |
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| One may fork out a lot to do such spadework in research (3,4) |
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| Struggle for inner strength |
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| Search for strength within |
USA Today |
16 Oct 2023 |
| Do some serious soul-searching |
LA Times Daily |
13 Mar 2023 |
| Find inner strength |
New York Times |
10 Jul 2021 |
| Push oneself to the max |
New York Times |
12 Oct 2016 |
| Try one's utmost |
New York Times |
29 Jun 2016 |
| Push oneself to the max |
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| Try one's utmost |
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| Research thoroughly |
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| Do some serious soul-searching |
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| Prepare to pay dearly |
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| Look for dirt, literal or otherwise |
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| Delve |
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