Perhaps you should try some spelling variations:
"cuong danh chat snippets" » "cuong danh code snippets", "cuon danh chat snippets", "huong dan chat snippets", "cuong linh chat snippets", "cuong dinh chat snippets", "cuong doanh chau snippets", "cuong danh cho snippets"
"locating bug core snippets" » "locating bug code snippets"
"dung java java snippets" » "dung va java snippets"

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("cuong danh chat snippets") or ("dung java java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cuong danh chat snippets") OR ("dung java java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( cuong danh chat snippets ) or ( dung java java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cuong danh chat snippets") or ("dung java java snippets"))) or ("locating bug core snippets"))*.