Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cao thu so snippets" » "cao thi so snippets", "cac thu so snippets", "ca thu so snippets", "cao thuc so snippets", "cao tru so snippets", "cao tu so 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 thu so 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 thu so snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cao thu so snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cao thu so snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.