Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hai don chat snippets" » "hai doc chat snippets", "hai cong chat snippets", "hai dinh chat snippets", "hai con chat snippets", "hai dan chat snippets", "hai son chat 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: (((("hai don chat snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("hai don chat snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hai don chat snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hai don chat snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.