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