Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cao thi cac snippets" » "cau thi cac snippets", "cao tai cac snippets", "dao thi cac snippets", "cao thi cuc snippets", "cao thi tac 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 thi cac 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 thi cac snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cao thi cac snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cao thi cac snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.