Perhaps you should try some spelling variations:
"han tu chat snippets" » "han tu code snippets", "han tu phat snippets", "han tu cham snippets", "han du chat snippets", "phan tu chat snippets", "hanh tu chat snippets", "ban tu chat snippets"
"locating bug core snippets" » "locating bug code snippets"
"python using java snippets" » "python using data 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: (((("python using java snippets") or ("han tu chat snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("python using java snippets") OR ("han tu chat snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( python using java snippets ) or ( han tu chat snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("python using java snippets") or ("han tu chat snippets"))) or ("locating bug core snippets"))*.