Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"han tai doc snippets" » "hang tai doc snippets", "nhan tai doc snippets", "van tai doc snippets", "han bai doc snippets", "han tai hoc snippets", "han than doc 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 tai doc 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 tai doc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( han tai doc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("han tai doc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.