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