Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"pham hung ho snippets" » "pham hong ho snippets", "pham hang ho snippets", "phan hung ho snippets", "pham hung hoa snippets", "pham phung ho snippets", "pham tung ho 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 hung ho 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 hung ho snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( pham hung ho snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("pham hung ho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.