Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"luan han cho snippets" » "luan hoan cho snippets", "luan phan cho snippets", "luan van cho snippets", "luan hang cho snippets", "luan han che snippets", "luan san cho 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: (((("luan han cho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("luan han cho snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( luan han cho snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("luan han cho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.