May I return it to get my money back?

我可以去找他退钱吗？

youdao

May I return to the hotel to change clothes?

我可以回饭店换衣服吗？

youdao

May I return the product in ease of any defect?

如果产品有瑕疵，我可以退货吗？

youdao

As Lincoln got on the train that would take him to Washington, he said: "I now leave, not knowing when -- or whether ever I may return.

VOA: special.2009.07.23

May no fate willfully misunderstand me And half grant what I wish and snatch me away not to return.

别来个命运之神，故意曲解我,只成全我愿望的一半，把我卷了走。

耶鲁公开课 - 现代诗歌课程节选

This is probably worth a separate discussion of its own and I may return to it.

FORBES: Ireland's Promissory Note Deal

If I ever return to a restaurant, I may be remembered to my advantage, but if I do not, no big deal, and others may benefit from my efforts.

ECONOMIST: Mexican stand-off

"I don't think the firm sees a return in the way I see a return, " says Mr. Yoshizaki, a May graduate of Wharton's Philadelphia program who is now a director at PricewaterhouseCoopers.

WSJ: Best Executive MBA Programs: The Wall Street Journal's 2010 Rankings