Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nghe van co snippets" » "nghe dan co snippets", "nghe va co snippets", "nghe san co snippets", "nghe van cho snippets", "nghe ban co 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 van co 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 van co snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( python using java snippets ) or ( nghe van co snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("python using java snippets") or ("nghe van co snippets"))) or ("locating bug code snippets"))*.