Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nin qua cu snippets" » "tin quan cu snippets", "sinh qua cu snippets", "nin qua cua snippets", "nin qua su snippets", "nin qua ca 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: (((("nin qua cu snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("nin qua cu snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nin qua cu snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nin qua cu snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.