Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dat hang cao snippets" » "dat khanh cao snippets", "dat quang cao snippets", "tat thang cao snippets", "dat hoang cao snippets", "dat nang cao snippets", "dat hang ca 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: (((("dat hang 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: (((("dat hang cao snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dat hang cao snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dat hang cao snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.