Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hung su cao snippets" » "nhung su cao snippets", "hung vu cao snippets", "dung su cao snippets", "hung cu cao snippets", "hung 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: (((("python using java snippets") or ("hung su cao snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("python using java snippets") OR ("hung su cao snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( python using java snippets ) or ( hung su cao snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("python using java snippets") or ("hung su cao snippets"))) or ("locating bug code snippets"))*.