Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"cong co cach snippets" » "dong co cach snippets", "cong cu cach snippets", "cong so cach snippets", "cong co cac snippets", "cong co sach snippets", "cong ca cach 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: (((("cong co cach snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cong co cach snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cong co cach snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cong co cach snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.