Fix empty search results

CHANGELOG.md

@@ -6,6 +6,7 @@
 
 ### Fixes
 - [#4419](https://github.com/blockscout/blockscout/pull/4419) - Order contracts in the search by inserted_at in descending order
+- [#4418](https://github.com/blockscout/blockscout/pull/4418) - Fix empty search results for the full-word search criteria
 - [#4406](https://github.com/blockscout/blockscout/pull/4406) - Fix internal server error on the validator's txs page
 - [#4360](https://github.com/blockscout/blockscout/pull/4360) - Fix false-pending transactions in reorg blocks
 - [#4388](https://github.com/blockscout/blockscout/pull/4388) - Fix internal server error on contract page for insctances without sourcify envs

apps/explorer/lib/explorer/chain.ex

@@ -1107,7 +1107,7 @@ defmodule Explorer.Chain do
       {:some, term} ->
         query =
           from(token in Token,
-            where: fragment("to_tsvector('english', symbol || ' ' || name ) @@ to_tsquery(?)", ^term),
+            where: fragment("to_tsvector(symbol || ' ' || name ) @@ to_tsquery(?)", ^term),
             select: %{
               contract_address_hash: token.contract_address_hash,
               symbol: token.symbol,
@@ -1130,7 +1130,7 @@ defmodule Explorer.Chain do
       {:some, term} ->
         query =
           from(smart_contract in SmartContract,
-            where: fragment("to_tsvector('english', name ) @@ to_tsquery(?)", ^term),
+            where: fragment("to_tsvector(name) @@ to_tsquery(?)", ^term),
             select: %{contract_address_hash: smart_contract.address_hash, name: smart_contract.name},
             order_by: [desc: smart_contract.inserted_at]
           )