Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"han che cuu snippets" » "han cham cuu snippets", "han cheo cua snippets", "phan che cuu snippets", "nhan che cuu snippets", "hanh che cuu 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 che cuu 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 che cuu snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( han che cuu snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("han che cuu snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.