Perhaps you should try some spelling variations:
"pham quan trinh snippets" » "pham qua trinh snippets", "pham quan tinh snippets", "pham xuan trinh snippets", "pham quang trinh snippets", "phap quan trinh snippets", "pham luan trinh snippets", "pham quan 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 quan 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 quan trinh snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( pham quan trinh snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("pham quan trinh snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.