Perhaps you should try some spelling variations:
"dung dung chet snippets" » "dung dung code snippets", "duong dung chet snippets", "ung dung chet snippets", "dung ung chet snippets", "dung dung chat snippets", "dung dung che snippets", "dung dung chien 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 dung chet 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 dung chet snippets") OR ("dung java java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( dung dung chet snippets ) or ( dung java java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung dung chet snippets") or ("dung java java snippets"))) or ("locating bug core snippets"))*.