Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"quoc so ve snippets" » "quoc son ve snippets", "nuoc so ve snippets", "quoc co ve snippets", "quoc so va snippets", "quoc su ve snippets", "quoc do ve 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: (((("quoc so ve snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("quoc so ve snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( quoc so ve snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("quoc so ve snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.