Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"den bang cac snippets" » "den nang cac snippets", "de bang cac snippets", "den lang cac snippets", "den nang cao snippets", "den hang ca snippets", "den dung cac snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core 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: (((("den bang cac snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("den bang cac snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( den bang cac snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("den bang cac snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.