Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"bach cho can snippets" » "bach khoa can snippets", "danh cho can snippets", "bac ho can snippets", "bach cho cac snippets", "bach cho phan snippets", "bach cho cong 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 cho can 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 cho can snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( bach cho can snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("bach cho can snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.