Perhaps you should try some spelling variations:
"dung dan chai snippets" » "dung dan code snippets", "dung dat chai snippets", "dung san chai snippets", "tung dan chai snippets", "dung dan chan snippets", "dung dan khai snippets", "dung dang khai 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 dan chai 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 dan chai snippets") OR ("dung java java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( dung dan chai snippets ) or ( dung java java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung dan chai snippets") or ("dung java java snippets"))) or ("locating bug core snippets"))*.