The strategies and skills of using search engine effectively include understanding the types and characteristics of search engine,choosing a suitable search engine,selecting appropriate and accurate keywords,making use of advanced search syntax or advanced search interface,utilizing object downloading,cached-similar pages and related searches,and developing a good habit of effective search,etc.

AI-based searches including a number of searches,such as depth-first search, least-cost search, and so on,we are able to find an "optimal"solution.

Some Studies of the Grid-based Methods for Optimization Problems;