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