Perhaps you should try some spelling variations:
"dung chuc hoat snippets" » "dung chuc code snippets", "dung thuoc hoat snippets", "dung chung hoat snippets", "dung cho hoat snippets", "dung thuc hoat snippets", "dung khuc hat snippets", "dung che hoat 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: (((("dung chuc hoat snippets") or ("dung java java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung chuc hoat snippets") OR ("dung java java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( dung chuc hoat snippets ) or ( dung java java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung chuc hoat snippets") or ("dung java java snippets"))) or ("locating bug core snippets"))*.