Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"pham chi chu snippets" » "pham thi chu snippets", "tham chi chu snippets", "pham chieu chu snippets", "pham chi chua snippets", "pham choi chu snippets", "pham cho chu 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 chi chu 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 chi chu snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( pham chi chu snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("pham chi chu snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.