Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"phuc dan so snippets" » "thuc dan so snippets", "phuc van so snippets", "chuc danh so snippets", "phuc dan soc snippets", "phuc dan su snippets", "phuc dan mo 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: (((("phuc dan so snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("phuc dan so snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( phuc dan so snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("phuc dan so snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.