Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"ban dan time snippets" » "ban a time snippets", "ban dan thue snippets", "ban dan tinh snippets", "ban hang time snippets", "ban hanh time snippets", "ban quan time 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 dan time 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 dan time snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( ban dan time snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("ban dan time snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.