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