Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"trac dan so snippets" » "truc dan so snippets", "tran dang so snippets", "tran danh so snippets", "trac dan soc snippets", "trac dan su snippets", "trac 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: (((("trac 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: (((("trac dan so snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( trac dan so snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("trac dan so snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.