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