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