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