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\title{\vspace{-2cm}
\leftline{\chudam Southeast-Asian J. of Sciences {\thuong
Vol. 4, No. 2 (2018) pp. \pageref{firstpage}-\pageref{lastpage}}\hfill}
\vspace{2cm}
 {\chuto   
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{\bf Key
words:}  
\\
  } }
\author{{\bf author 1${}^{1}$, author 2${}^{2}${\rm and} author 3${}^3$    
}\\
 \vspace{-0.2cm}\\
 \vspace{-0.2cm} {\ita   ${}^{1}$ name of Department and Faculty} \\
 \vspace{-0.2cm} {\ita name of University}\\
\vspace{-0.2cm}{\ita Address }\\
 \vspace{-0.2cm} {\ita email: xxxx@xxx.xx }\\
  \vspace{-0.2cm} \\
  \vspace{-0.2cm} {\ita $^2$name of Department and Faculty }\\
  \vspace{-0.2cm} {\ita Address  }\\
  \vspace{-0.2cm} {\ita email:   }\\
\vspace{-0.2cm} \\
  \vspace{-0.2cm} {\ita $^3$name of Department and Faculty }\\
  \vspace{-0.2cm} {\ita Address  }\\
  \vspace{-0.2cm} {\ita email:   }
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 \begin{abstract}  

 
\end{abstract}



\section{Introduction} 


 \subsection{Subsection1}

 
 \subsection{Subsection2}
\section{Main Results   }
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\vspace{0.3cm}\noindent{\bf Acknowledgment}

 
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