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