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