Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"doan va cua snippets" » "doan va chua snippets", "doan via cua snippets", "doan ca cua snippets", "doanh va cua snippets", "dan va cua snippets", "toan va cua 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: (((("doan va cua snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("doan va cua snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( doan va cua snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("doan va cua snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.