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