Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"han li he snippets" » "shan li he snippets", "ban li he snippets", "dan li he snippets", "han ly he snippets", "han gi he snippets", "han vi he 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: (((("han li he 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 li he snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( han li he snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("han li he snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.