Perhaps you should try some spelling variations:
"pham hoa trinh snippets" » "pham hoa tinh snippets", "pham hoa thinh snippets", "pham hoc trinh snippets", "pham khoa trinh snippets", "phan hoa trinh snippets", "pham hoang trinh snippets", "pham hoa trinh 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", "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: (((("pham hoa trinh snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("pham hoa trinh snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( pham hoa trinh snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("pham hoa trinh snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.