diff --git a/src/controllers/01-branch-controller.ts b/src/controllers/01-branch-controller.ts
index c7d220f..e333f6b 100644
--- a/src/controllers/01-branch-controller.ts
+++ b/src/controllers/01-branch-controller.ts
@@ -244,6 +244,7 @@ export class BranchController extends Controller {
         OR: permissionCond(req.user, withHead),
       },
       OR: [
+        { code: { contains: query, mode: "insensitive" } },
         { nameEN: { contains: query } },
         { name: { contains: query } },
         { email: { contains: query } },
@@ -253,6 +254,7 @@ export class BranchController extends Controller {
           branch: {
             some: {
               OR: [
+                { code: { contains: query, mode: "insensitive" } },
                 { nameEN: { contains: query } },
                 { name: { contains: query } },
                 { email: { contains: query } },
diff --git a/src/controllers/04-product-controller.ts b/src/controllers/04-product-controller.ts
index 461bd63..3c1f03e 100644
--- a/src/controllers/04-product-controller.ts
+++ b/src/controllers/04-product-controller.ts
@@ -124,7 +124,7 @@ export class ProductController extends Controller {
         ? [
             { name: { contains: query } },
             { detail: { contains: query } },
-            { code: { contains: query } },
+            { code: { contains: query, mode: "insensitive" } },
           ]
         : undefined,
       AND: {
diff --git a/src/controllers/04-service-controller.ts b/src/controllers/04-service-controller.ts
index a60fd31..4147832 100644
--- a/src/controllers/04-service-controller.ts
+++ b/src/controllers/04-service-controller.ts
@@ -127,7 +127,7 @@ export class ServiceController extends Controller {
         ? [
             { name: { contains: query } },
             { detail: { contains: query } },
-            { code: { contains: query } },
+            { code: { contains: query, mode: "insensitive" } },
           ]
         : undefined,
       AND: {
diff --git a/src/controllers/05-quotation-controller.ts b/src/controllers/05-quotation-controller.ts
index c461758..3c58223 100644
--- a/src/controllers/05-quotation-controller.ts
+++ b/src/controllers/05-quotation-controller.ts
@@ -182,8 +182,10 @@ export class QuotationController extends Controller {
     @Query() page: number = 1,
     @Query() pageSize: number = 30,
     @Query() payCondition?: PayCondition,
+    @Query() query = "",
   ) {
     const where = {
+      OR: [{ code: { contains: query, mode: "insensitive" } }],
       payCondition,
       registeredBranch: isSystem(req.user) ? undefined : { OR: permissionCond(req.user) },
     } satisfies Prisma.QuotationWhereInput;