Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cong cho bo snippets" » "dong cho bo snippets", "cong co bo snippets", "rong cho bo snippets", "cong cho bao snippets", "cong cho ba snippets", "cong cho ro 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 cho bo 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 cho bo snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cong cho bo snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cong cho bo snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.