Perhaps you should try some spelling variations:
"pham phap trinh snippets" » "pham phap tinh snippets", "pham lap trinh snippets", "pham phap sinh snippets", "kham pha trinh snippets", "phap phan trinh snippets", "pham nhat trinh snippets", "pham phap 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 phap 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 phap trinh snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( pham phap trinh snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("pham phap trinh snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.