Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hap dan cao snippets" » "hat dan cao snippets", "hai dan cao snippets", "ham dan cao snippets", "hap dan ca snippets", "hap dam cao snippets", "hap dan bao 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: (((("hap dan 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: (((("hap dan cao snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hap dan cao snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hap dan cao snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.