What is "语气词"? Why does this question end with 嘛 instead of 吗?
Check out ABC's definition of 嘛:


  1 (used to persuade sb. to do sth.)  
  
  来嘛, 不要太任性。
  Lái ma, bụ̀yào tài rènxìng.
  Come on, don't be so stubborn. 
  
  2 (used to emphasize the obvious)
  
  是星期日嘛。办公室当然关了。
  Shì Xīngqīrì ma. Bàngōngshì dāngrán guān le.
  It's Sunday. Of course offices are closed. 


So here 嘛, despite it's similar pronunciation, has very different usage to 吗. It is mostly used in persuasion or to emphasize something that is obvious.



Taking your sentence if it had been 吗 instead we would have something like:


你可以找到我吗？
Can you find me?


but your sentence: 你可以找到我嘛 works out to something more like:


See if you can find me!