Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"hanh van chi snippets" » "thanh van chi snippets", "khanh van chi snippets", "hanh va chi snippets", "hanh van chien snippets", "hanh luan chi snippets", "hanh van chat 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: (((("hanh van chi snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("hanh van chi snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hanh van chi snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hanh van chi snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.