diff --git a/app/Traits/SearchString.php b/app/Traits/SearchString.php
index 6fb508e7f..1acded948 100644
--- a/app/Traits/SearchString.php
+++ b/app/Traits/SearchString.php
@@ -7,8 +7,9 @@ trait SearchString
     /**
      * Get the value of a name in search string
      * Example: search=type:customer year:2020 account_id:20
+     * Example: issued_at>=2021-02-01 issued_at<=2021-02-10 account_id:49
      *
-     * @return string
+     * @return string|array
      */
     public function getSearchStringValue($name, $default = '', $input = null)
     {
@@ -18,21 +19,29 @@ trait SearchString
             $input = request('search');
         }
 
-        //$manager = $this->getSearchStringManager();
-        //$parsed = $manager->parse($input);
+        // $manager = $this->getSearchStringManager();
+        // $parsed = $manager->parse($input);
 
         $columns = explode(' ', $input);
 
         foreach ($columns as $column) {
-            $variable = explode(':', $column);
+            $variable = preg_split('/:|>?<?=/', $column);
 
             if (empty($variable[0]) || ($variable[0] != $name) || empty($variable[1])) {
                 continue;
             }
+            
+            if (strpos($column, ':')) {
+                $value = $variable[1];
 
-            $value = $variable[1];
+                break;
+            }
 
-            break;
+            if (!is_array($value)) {
+                $value = [];
+            }
+
+            $value[] = $variable[1];
         }
 
         return $value;