Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tuc dan do snippets" » "thuc dan do snippets", "thuc day do snippets", "tung dan do snippets", "tuc dang do snippets", "tuc dan dao snippets", "tuc doan do 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: (((("tuc dan do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("tuc dan do snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tuc dan do snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tuc dan do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.