Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dat phan co snippets" » "data phan co snippets", "dam phan co snippets", "sat phan co snippets", "dat phan bo snippets", "dat phan cong snippets", "dat 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: (((("dat phan co snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dat phan co snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dat phan co snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dat phan co snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.