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