Perhaps you should try some spelling variations:
"pham can tranh snippets" » "pham canh tranh snippets", "pham tan tran snippets", "pham van ranh snippets", "pham van tranh snippets", "pham lan tranh snippets", "pham ca tranh snippets", "pham can tranh 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 can tranh 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 can tranh snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( pham can tranh snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("pham can tranh snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.