Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"hang va toc snippets" » "hang va doc snippets", "hang va tac snippets", "hang va ton snippets", "nang va toc snippets", "dang va toc snippets", "hanh va toc 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: (((("hang va toc snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("hang va toc snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hang va toc snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hang va toc snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.