Perhaps you should try some spelling variations:
"dong pham dat snippets" » "cong pham dat snippets", "dong pha dat snippets", "dong phan dat snippets", "dong pham dac snippets", "dong pham dau snippets", "dong pham nhat snippets", "dong pham dat 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: (((("dong pham dat snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dong pham dat snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dong pham dat snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dong pham dat snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.