diff --git a/src/editor/core/line.rs b/src/editor/core/line.rs
index 78b3296..3c5328c 100644
--- a/src/editor/core/line.rs
+++ b/src/editor/core/line.rs
@@ -72,6 +72,23 @@ impl EditorLine {
         return Ok(());
     }
 
+    pub fn find_all(&self, pat: &str) -> Option<Vec<usize>> {
+        let mut text = self.content();
+        let mut pos_offset = 0;
+        let mut result_vec = vec![];
+        while let Some(pos) = text.find(pat) {
+            result_vec.push(pos + pos_offset);
+            pos_offset += pos + pat.len();
+            text = &text[(pos + pat.len())..];
+        }
+
+        if result_vec.is_empty() {
+            return None;
+        } else {
+            return Some(result_vec);
+        }
+    }
+
     #[inline]
     fn update_label_width(&mut self, new_width: usize) {
         self.text_area.margin_left = new_width;
@@ -102,3 +119,11 @@ impl EditorLine {
         self.text_area.len()
     }
 }
+
+#[test]
+fn editorline_find_all_test() {
+    let mut line = EditorLine::new(0);
+    line.push_str("abc  abc  abc");
+
+    assert_eq!(line.find_all("abc"), Some(vec![0, 5, 10]));
+}
diff --git a/src/editor/core/mod.rs b/src/editor/core/mod.rs
index 77474fc..107b159 100644
--- a/src/editor/core/mod.rs
+++ b/src/editor/core/mod.rs
@@ -608,18 +608,18 @@ impl Editor {
     }
 
     fn search(&self, target: &str) -> Option<Vec<EditorCursorPos>> {
-        let result_pos_list: Vec<EditorCursorPos> = self
-            .lines
-            .iter()
-            .enumerate()
-            .filter_map(|(i, l)| match l.content().find(target) {
-                Some(pos) => Some(EditorCursorPos {
-                    row: i + 1,
-                    col: pos + 1,
-                }),
-                None => None,
-            })
-            .collect();
+        let mut result_pos_list = Vec::<EditorCursorPos>::new();
+        for (index, line) in self.lines.iter().enumerate() {
+            match line.find_all(target) {
+                Some(pos_list) => for pos in pos_list {
+                    result_pos_list.push(EditorCursorPos {
+                        row: index + 1,
+                        col: pos + 1,
+                    })
+                }
+                None => {}
+            }
+        }
 
         if !result_pos_list.is_empty() {
             return Some(result_pos_list);