Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tan cua line snippets" » "tan cua sinh snippets", "tan cua tinh snippets", "tan cua kinh snippets", "than cua line snippets", "tang cua line snippets", "toan cua line 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: (((("tan cua line snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("tan cua line snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tan cua line snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tan cua line snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.