 Experimental results on English-German and  English-Vietnamese low resource neural machine translation showed that the proposed approach outperforms baselines that use the traditional back-translation method .
<meaning-changed>  Experimental results on English-German and  English-Vietnamese low resource neural machine translation showed that the proposed approach outperforms baselines that use the traditional back-translation method .
 Experimental results on English-German and English-Vietnamese low resource neural machine translation showed that the proposed approach outperforms baselines that use the traditional back-translation by 2.7 BLEU .