Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cao lan do snippets" » "cao van do snippets", "cao dang do snippets", "cao tang do snippets", "cao ban do snippets", "cao lan o 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 do 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 do snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cao lan do snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cao lan do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.