Gangjee totalled two-over 286 to finish Tied-43, down from Tied-29th after three rounds, while Bhullar signed off at tied 55th at four-over 288.
Gangjee had four birdies against six bogeys on a rather eventful day, while Bhullar had three birdies against two bogeys.
Canada's Richard T Lee completed his remarkable comeback from injuries by overcoming a two-shot deficit to win the Shinahan Donghae Open by one shot today.
Lee's final round of five-under 66 was enough to see him lift his second Asian Tour title at the expense of Malaysia's Gavin Green, who was left to settle for second place after he had started the day with the lead.
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But his resolve to win again saw him return to Korea early to practice where he played on the Bear's Best Cheongna Golf Club for at least six times before the tournament got underway.
Lee's efforts were finally rewarded when he posted rounds of 68, 71, 68 and 66 to lift the Shinhan Donghae Open trophy with his winning total of 11-under-par 273.
Green, meanwhile, remained optimistic about his future despite having to wait longer for his maiden breakthrough on the Asian Tour.
Zimbabwean Scott Vincent, who finished tied-second last year, enjoyed another good outing when he signed off with a 68 to share third place with Younghan Song and Hyungseok Seo from Korea.
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