diff --git a/src/background/sphinx.js b/src/background/sphinx.js
index 2ae8a34..2fbeb09 100644
--- a/src/background/sphinx.js
+++ b/src/background/sphinx.js
@@ -38,10 +38,10 @@ const writeSphinxConfig = async (rootPath, dbPath, params = {}) => {
     type = rt
     path = ${dbPath}/database/torrents
 
-    min_prefix_len = 3
+    min_prefix_len = 2
     expand_keywords = 1
     charset_type = utf-8
-    charset_table = 0..9, A..Z->a..z, a..z, U+4E00..U+9FFF->U+4E00..U+9FFF, U+3400..U+4DBF->U+3400..U+4DBF, U+20000..U+2A6DF->U+20000..U+2A6DF, U+2A700..U+2B73F->U+2A700..U+2B73F, U+2B740..U+2B81F->U+2B740..U+2B81F, U+2B820..U+2CEAF->U+2B820..U+2CEAF, U+2CEB0..U+2EBEF->U+2CEB0..U+2EBEF
+    charset_table = 0..9, A..Z->a..z, a..z, U+0000..U+10FFFF
 
 
     rt_attr_string = hash
@@ -72,7 +72,7 @@ const writeSphinxConfig = async (rootPath, dbPath, params = {}) => {
     path = ${dbPath}/database/files
 
     charset_type = utf-8
-    charset_table = 0..9, A..Z->a..z, a..z, U+4E00..U+9FFF->U+4E00..U+9FFF, U+3400..U+4DBF->U+3400..U+4DBF, U+20000..U+2A6DF->U+20000..U+2A6DF, U+2A700..U+2B73F->U+2A700..U+2B73F, U+2B740..U+2B81F->U+2B740..U+2B81F, U+2B820..U+2CEAF->U+2B820..U+2CEAF, U+2CEB0..U+2EBEF->U+2CEB0..U+2EBEF
+    charset_table = 0..9, A..Z->a..z, a..z, U+0000..U+10FFFF
 
 
     rt_field = path