Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"ban cho con snippets" » "ban cheo con snippets", "bang cho con snippets", "ban co con snippets", "ban cho cong snippets", "ban cho lon snippets", "ban cho can 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: (((("ban cho con snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("ban cho con snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( ban cho con snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("ban cho con snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.