Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"than phan co snippets" » "thanh phan co snippets", "toan phan co snippets", "thanh pham co snippets", "than phan bo snippets", "than phan cong snippets", "than phan cac 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 ("than phan 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 ("than phan co snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( python using java snippets ) or ( than phan co snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("python using java snippets") or ("than phan co snippets"))) or ("locating bug code snippets"))*.