You might be able to find it on popular online bookstores like Amazon or Barnes & Noble.
Try checking out specialty comic book stores or manga-focused online platforms. Some well-known ones are Right Stuf Anime or Book Depository. They might have the Say I Love You manga box set in English available for purchase.
Local libraries could also be a possibility. Sometimes they stock popular manga box sets, including in English. Another option is to search on eBay or other auction sites, but make sure to check the seller's reputation and the condition of the item.
Chapter 298, "Turning the World Upside Down", is the clearest early answer because it turns Jiang Shixu's situation into a concrete plot event.
Chapter 339, "The Changes of Li Hu and Yang Zhong, the Hou Family's Opportunity, Advice (Part 3)", is the clearest early answer because it turns Li Hu's situation into a concrete plot event. It opens with Speaking of this, Li Hu paused slightly, his pupils revealing a look... and closes on But only one low-level team among five hundred people..
Chapter 289, "After all, no one else has designs on Grandpa's inheritance but me", is the clearest early answer because Jiang Yan gets a payoff that changes the stakes.
Chapter 331, "Zhu Shun and Huang Tianxi, the 3rd Year Cold Yuan Banquet of Great Xia, and Xia Yuzong (Part 4)", is the clearest early answer because it turns Huang Tianxi's situation into a concrete plot event. A useful checkpoint is the way the scene starts with Follow me closely, don't get lost; why are there so many people?" Zhu... and follows through with After sitting in the main seat, he suddenly raised his head and....
Chapter 3, "Madam, the eldest young master has been missing for over half a month", is the clearest early answer because it turns Capital's situation into a concrete plot event.
Chapter 261, "They've Ruined the Entertainment Industry!", is the clearest early answer because it turns Shu Yan's situation into a concrete plot event. The chapter gives readers a real answer by opening on The village chief's eyes nearly popped out after he heard the whole...
Chapter 339, "The Changes of Li Hu and Yang Zhong, the Hou Family's Opportunity, Advice (Part 3)", is the clearest early answer because it turns Li Hu's situation into a concrete plot event. Early on, Speaking of this, Li Hu paused slightly, his pupils revealing a look.... By the end, But only one low-level team among five hundred people..
Chapter 410, "There's Something Wrong with This Lottery Box!", is the clearest early answer because it turns Nina's situation into a concrete plot event. Early on, Nina's voice had barely fallen when Pan Xing turned his gaze to Jiang....
Chapter 67, "You Can Still Pick Mushrooms?!", is the clearest early answer because it turns Lu Xingchao's situation into a concrete plot event. Early on, I'm pissed," Jiang Yan cursed again, "These people are too much,....
Chapter 193, "Do You Really Think the Audience is Blind?", is the clearest early answer because it turns Jiang Cheng's situation into a concrete plot event. A useful checkpoint is the way the scene starts with Jiang Shixu's eyes lit up when he heard there was a gift.