Perhaps you should try some spelling variations:
"dung don chat snippets" » "dung don code snippets", "dung dong chat snippets", "dung doi chat snippets", "dung dan chat snippets", "dung doc chat snippets", "dung cong chat snippets", "dung dinh chat snippets"
"locating bug core snippets" » "locating bug code snippets"
"hang java java snippets" » "hang 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 don chat snippets") or ("hang java java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung don chat snippets") OR ("hang java java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( dung don chat snippets ) or ( hang java java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung don chat snippets") or ("hang java java snippets"))) or ("locating bug core snippets"))*.