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