Perhaps you should try some spelling variations:
"dan tri chat snippets" » "dan tri code snippets", "dan tra chat snippets", "dan trinh chat snippets", "dan tri nhan snippets", "dan thi chat snippets", "van tri chat snippets", "dan tai chat snippets"
"locating bug core snippets" » "locating bug code snippets"
"dung java java snippets" » "dung va java snippets"

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

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