Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hoai su cao snippets" » "hoa su cao snippets", "hoach su cao snippets", "hoai thu cao snippets", "hoai cu cao snippets", "hoai vu cao snippets", "hoai su co 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: (((("hoai su 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: (((("hoai su cao snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hoai su cao snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hoai su cao snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.