Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cao lan co snippets" » "cao van co snippets", "cao dang co snippets", "cao tang co snippets", "cao lang co snippets", "cao lan cho snippets", "cao lanh co 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: (((("cao lan co snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cao lan co snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cao lan co snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cao lan co snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.