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