In contrast to general purpose search engine, which attempt to index the whole Web, Topic-Specific search engines can cover specialized topics in more depth and keep the crawl more freshly.
而主题搜索引擎只覆盖与特定主题相关的Web区域，这样它搜索的可以更深，搜索的周期可以更短，因此能满足用户对获取信息资源快速、准确的性能要求。
Design and realization of topic search based on transfering of searching engine;
基于搜索引擎调用的主题搜索设计与实现
The Implementation of Focused-search Engine Based on Nutch Technology;
基于Nutch技术的主题搜索引擎实现
Study on Information Extraction and the Index of Topic Search Engine;
主题搜索引擎的信息抽取和索引的研究
Link Delamination Algorithm for Topic Search
基于主题搜索的链接分层算法设计与实现
The Research and Implementation of Topic-Searching Engine System for Meteorology Based on the .NET;
基于.NET的气象主题搜索引擎系统的研究与实现
The Design and Implementation of Topic Searcher Education Multimedia-Oriented;
面向教育的多媒体主题搜索器设计与实现
The Research and Application of Integrated Risk Search Engine Technology;
风险主题搜索引擎相关技术的研究与应用
Focused Web Crawling Strategy Based on Formal Concept Analysis;
基于形式概念分析的主题搜索策略研究
Research on Sbjects Seraching and Materialized View Technology in Data Warehouse;
数据仓库中主题搜索和实化视图技术的研究
The Research and Design on Topic-specific Search Engine Based on Lucene;
基于Lucene面向主题搜索引擎的研究与设计
Information Recommendation System Based on User Preference Mining and Topic Search Technique;
基于用户偏好挖掘和主题搜索的情报推荐系统
Displays Help topics for Microsoft Word
键入或选择关键字以搜索“帮助”主题
Research on the Optimizes and Realize of Topic Web Search Engine
主题WEB搜索引擎优化与实现研究
The Research of Topical Crawler Search Strategy in Web Page
主题爬虫搜索Web页面策略的研究
Topic-Specific News Portal System Based on Meta Search
基于元搜索技术的主题新闻门户系统
Specifies whether to search only the topics that reside in this category. This option only limits the search results displayed under 'Suggested Topics'.
指定是否只搜索在此类别中的主题。此选项只限制在'建议的主题'中显示的搜索结果。
Search From/To and Subject fields only (quicker)
只在“发件人”、“收件人”以及“主题”栏中搜索（较快）
Limit the search scope to items in the following topics or areas
将搜索范围限制为下列主题或区域中的项目
Searches for a Help topic by typing or selecting a keyword
通过键入或选择关键词来搜索“帮助”主题