Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"buoc phan do snippets" » "buoc chan do snippets", "phuoc phan do snippets", "hoc phan do snippets", "buoc phan bo snippets", "buoc phan co snippets", "buoc phan mo 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: (((("buoc phan do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("buoc phan do snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( buoc phan do snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("buoc phan do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.