Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"mot chi cong snippets" » "mot thi cong snippets", "mot cho cong snippets", "mot phi cong snippets", "mot cai cong snippets", "mot chu cong snippets", "mot chien cong 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: (((("mot chi cong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("mot chi cong snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( mot chi cong snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("mot chi cong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.