Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dong hai iot snippets" » "dong ha iot snippets", "dong tai iot snippets", "cong hai iot snippets", "dong ai iot snippets", "dong hai viet snippets", "dong 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: (((("dong 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: (((("dong hai iot snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dong hai iot snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dong hai iot snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.