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