use pinyin text search in org buffer

lisp/init-utils.el

@@ -557,9 +557,12 @@ Copied from 3rd party package evil-textobj."
 
      ;; If the first character of input in ivy is ":" or ";",
      ;; remaining input is converted into Chinese pinyin regex.
-     ((string-match "[:\|;]" (substring str 0 1))
+     ((or (and (string-match "[:\|;]" (substring str 0 1))
+               (setq str (substring str 1 len)))
+          (and (buffer-name) (or (string= "*Org Agenda*" (buffer-name))
+                                 (string-match "\\.org$" (buffer-name)))))
       (my-ensure 'pinyinlib)
-      (setq str (pinyinlib-build-regexp-string (substring str 1 len))))
+      (setq str (pinyinlib-build-regexp-string str)))
 
      ;; If the first character of input in ivy is "/",
      ;; remaining input is converted to pattern to search camel case word