Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"quan doc do snippets" » "quan doi do snippets", "quan dac do snippets", "quan doan do snippets", "quan doc dao snippets", "quan duoc do snippets", "quan hoc do 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: (((("quan doc do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("quan doc do snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( quan doc do snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("quan doc do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.