Perhaps you should try some spelling variations:
"pham think java snippets" » "pham thi java snippets", "pham thanh java snippets", "pham thang java snippets", "pham trinh java snippets"
"dung cac co snippets" » "luong cac co snippets", "dung cho co snippets", "dung tai co snippets", "dung cac cong snippets"
"locating bug code snippets" » "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: (((("dung cac co snippets") or ("pham think java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung cac co snippets") OR ("pham think java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung cac co snippets ) or ( pham think java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung cac co snippets") or ("pham think java snippets"))) or ("locating bug code snippets"))*.