Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nghe tac can snippets" » "nghe tan can snippets", "nghe bac can snippets", "nghe tai can snippets", "nghe tac van snippets", "nghe tac quan snippets", "nghe tac vang 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: (((("python using java snippets") or ("nghe tac can snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("python using java snippets") OR ("nghe tac can snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( python using java snippets ) or ( nghe tac can snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("python using java snippets") or ("nghe tac can snippets"))) or ("locating bug code snippets"))*.