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: (((("bach dan chu snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("bach dan chu snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( bach dan chu snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("bach dan chu snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.