Transfer Learning Not giving better results

I am doing transfer learning on pre-trained english model but not getting good results. please help…

I am using following commands…
python3 DeepSpeech.py --train_cudnn True --use_allow_growth true --drop_source_layers 2 --alphabet_config_path deepspeech-data/alphabet.txt --train_files deepspeech-data/train.csv --dev_files deepspeech-data/dev.csv --n_hidden 2048 --epochs 50 --load_checkpoint_dir deepspeech-data/deepspeech-0.9.3-checkpoint --save_checkpoint_dir deepspeech-data/checkpoints --dropout_rate 0.4 --train_batch_size 14 --dev_batch_size 8 show_progressbar true --summary_dir deepspeech-data/summary1 --learning_rate 0.00002 --es_epochs 18 --es_min_delta 0.05 --reduce_lr_on_plateau true --plateau_epochs 7 --plateau_reduction 0.1