Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"day toan ho snippets" » "dan toan ho snippets", "dang toan ho snippets", "day thanh ho snippets", "day toan hoc snippets", "day toan khoa snippets", "day toan cao 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: (((("day toan ho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("day toan ho snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( day toan ho snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("day toan ho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.