Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"den dam cao snippets" » "den cam cao snippets", "den dem cao snippets", "den lam cao snippets", "den dam bao snippets", "den nam cao snippets", "den dam rao 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: (((("den dam cao snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("den dam cao snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( den dam cao snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("den dam cao snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.