Perhaps you should try some spelling variations:
"trong dan mode snippets" » "trong dan code snippets", "trong dang mode snippets", "trong san mode snippets", "trong tan mode snippets", "trong dual mode snippets", "trong dan mon snippets", "trong dan de 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 java java snippets") or ("trong dan mode snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung java java snippets") OR ("trong dan mode snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( dung java java snippets ) or ( trong dan mode snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung java java snippets") or ("trong dan mode snippets"))) or ("locating bug core snippets"))*.