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