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