Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"hung hoa can snippets" » "hang hoa can snippets", "ung hoa can snippets", "trung hoa can snippets", "hung khoa can snippets", "hung hoa dan snippets", "hung hoa van 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: (((("hung hoa can snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("hung hoa can snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hung hoa can snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hung hoa can snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.