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