Perhaps you should try some spelling variations:
"phap nguoi code snippets" » "phau nguoi code snippets", "phap nuoi code snippets", "phai nguoi code snippets", "phap nguoi co snippets", "phap nguoi cong snippets", "phap nguoi cor snippets", "phap nguoi code slippers"
"dung java java snippets" » "dung va java snippets", "dung java java slippers"
"locating bug code snippets" » "locating bug code slippers", "locating bung code snippets", "locating bugs code 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: (((("phap nguoi code snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("phap nguoi code snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( phap nguoi code snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("phap nguoi code snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.