Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cua dan long snippets" » "cua dan dong snippets", "cua dan ong snippets", "cua van long snippets", "cua dang long snippets", "cua ban long snippets", "ca dan long 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 dan long 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 dan long snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cua dan long snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cua dan long snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.