Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"hang va cad snippets" » "hang va cac snippets", "hang va cao snippets", "hang va cai snippets", "nang va cad snippets", "dang va cad snippets", "hanh va cad 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 cad 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 cad snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hang va cad snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hang va cad snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.