Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"both bi toan snippets" » "bot bi toan snippets", "both bai toan snippets", "both boi toan snippets", "both bi tan 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: (((("both bi 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: (((("both bi toan snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( both bi toan snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("both bi toan snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.