Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets", "python using java slippers"
"han vu zhang snippets" » "han vu khang snippets", "han yu zhang snippets", "han hui zhang snippets", "han vui zhang snippets", "hanh vu zhang snippets", "han va zhang snippets", "han vu zhang slippers"
"locating bug code snippets" » "locating bug code slippers", "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: (((("han vu zhang snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("han vu zhang snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( han vu zhang snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("han vu zhang snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.