Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cao tu cho snippets" » "cao thu cho snippets", "co tu cho snippets", "cao su cho snippets", "cao tu choi snippets", "cao tu chon snippets", "cao cu cho 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 tu cho 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 tu cho snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cao tu cho snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cao tu cho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.