Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tim man toan snippets" » "tim manh toan snippets", "tim van toan snippets", "tim dan toan snippets", "tim ban toan snippets", "tim mat toan snippets", "tim mach 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: (((("tim man 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: (((("tim man toan snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tim man toan snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tim man toan snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.