Các bạn tham khảo ở đây nhé
https://rtgit.rta.vn/rta_xuanle/cheat-sheet/-/blob/master/R%20Cheat%20Sheet/R%20Cheat%20Sheets.pdf
https://rtgit.rta.vn/rta_xuanle/cheat-sheet/-/tree/master/R%20Cheat%20Sheet
https://drive.google.com/drive/folders/1BtS-NLF3JNHOtTyaKzcuP_Rha_iiuL-J?usp=drive_link