Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"hoc chat cao snippets" » "hoc phat cao snippets", "hoc cao cao snippets", "hoc phan cao snippets", "hoc chat co snippets", "hoc chat cho snippets", "hoc chat bao 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: (((("hoc chat cao snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("hoc chat cao snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hoc chat cao snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hoc chat cao snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.