Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cong ti doi snippets" » "cong ty doi snippets", "cong li doi snippets", "cong tu doi snippets", "cong tri doi snippets", "cong toi doi snippets", "cong te doi 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: (((("cong ti doi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cong ti doi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cong ti doi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cong ti doi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.