Perhaps you should try some spelling variations:
"chung do chat snippets" » "chung do code snippets", "chung co chat snippets", "chung o chat snippets", "nhung don chat snippets", "chung doc chat snippets", "chung don chat snippets", "chung do nhat 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 ("chung do 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 ("chung do chat snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( dung java java snippets ) or ( chung do chat snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung java java snippets") or ("chung do chat snippets"))) or ("locating bug core snippets"))*.