Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"doan hai iot snippets" » "doanh tai iot snippets", "hoang hai iot snippets", "doan va iot snippets", "doan ai iot snippets", "doan hai viet snippets", "doan hai vuot 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: (((("doan hai iot snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("doan hai iot snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( doan hai iot snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("doan hai iot snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.