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