Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"chu cua do snippets" » "chuc cua do snippets", "hu cua do snippets", "chi cua do snippets", "chu cua dao snippets", "chu cua bo snippets", "chu cua co 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: (((("chu cua 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: (((("chu cua do snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( chu cua do snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("chu cua do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.