Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"han chi hoat snippets" » "han che hoat snippets", "han chi hoa snippets", "han phi hoat snippets", "van chi hoat snippets", "san chi hoat 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 chi hoat 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 chi hoat snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( han chi hoat snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("han chi hoat snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.