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