Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"bach dan chu snippets" » "bach dang chu snippets", "bac dan chu snippets", "bach van chu snippets", "bach dan cu snippets", "bach can chu snippets", "bach dan cho 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 ("bach dan chu snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("python using java snippets") OR ("bach dan chu snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( python using java snippets ) or ( bach dan chu snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("python using java snippets") or ("bach dan chu snippets"))) or ("locating bug code snippets"))*.