code: public String wordSegment(String text){
  		String ret = text;
  		
  		if (vnSegmenter == null) return ret;
  		ret = vnSegmenter.segmenting(ret);
  		return ret;
  	}
docs: Do word segmentation.
  
  @param text to be segmented by words
  @return text with words segmented, syllables in words are joined by '_'