Calvin Harrison achieved his first-ever five-wicket haul in First-Class cricket before Notts increased their lead on day three. Despite Worcestershire's late-order resistance earlier in the day, they lost several wickets in the evening session.
The Pears' seventh and ninth wicket partnerships added 84 and 68 runs, respectively, before they were dismissed for 355, 44 runs short of Nottinghamshire's first innings total. Harrison claimed two wickets and finished with figures of 5-128.
Ben Duckett and Haseeb Hameed opened the innings with a partnership of 81 runs, extending Nottinghamshire's lead. However, Nathan Smith's four-wicket haul in just seven balls halted the home side's progress. As a result, the Green and Golds are now 195 runs ahead with only three wickets in hand.
After almost an hour, Notts finally made their first breakthrough of the day thanks to Liam Patterson-White's spin. His arm-ball evaded the inside edge and struck D'Oliveira shortly after he had made an 89-ball fifty.
However, Nathan Smith remained unflustered against Patterson-White, Harrison, and the short ball theory employed by Dillon Pennington.
Josh Baker was the first to fall, chipping back to Harrison for his third caught and bowled of the match.
Joe Leach was introduced and reached the lunch break unbroken with Smith, with the score at 331/8. He rotated the strike effectively and took advantage of the extra zip offered by the new ball despite his First-Class average of 23.
The Kiwi reached his half-century in 103 balls by cutting to the point boundary. However, he fell into Pennington's trap and was caught by Lyndon James at deep backward-square. Adam Finch bowled around his legs to give Harrison his fifth wicket.
Duckett and Hameed added 56 runs before tea, with the latter being caught while looking to press the issue after the break for 40.
The England opener reached his fifty with a straight drive for four off Smith, six deliveries before Ben Slater slog swept Josh Baker over the timid wicket to signal Notts' intent.
The momentum shifted in the visitors' favour when Duckett turned to mid-wicket, Clarke was caught impressively by Gareth Roderick off
the inside edge, and Matthew Montgomery was adjudged lbw to give the overseas Smith a triple-wicket maiden.
On the first ball of the next over, he bowled out Jack Haynes. Later, he bowled out Harrison. In between, Ben Slater clipped Baker to short-leg.
Lyndon James and Liam Patterson-White relieved the remaining pressure. Both teams returned amidst an indifferent weather forecast for day four.