Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"pham nam can snippets" » "pham nhat can snippets", "pham van can snippets", "pham tai can snippets", "pham nam dan snippets", "pham nam cao snippets", "pham nam cac 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 nam can 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 nam can snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( pham nam can snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("pham nam can snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.