Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"quan van cap snippets" » "luan van cap snippets", "quan va cap snippets", "quan luan cap snippets", "quan van cau snippets", "quan van dap snippets", "quan van 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: (((("quan van cap 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 van cap snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( quan van cap snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("quan van cap snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.