Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"quan nam ve snippets" » "quang nam ve snippets", "xuan nam ve snippets", "quan am ve snippets", "quan nam va snippets", "quan nam he snippets", "quan nam v 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 nam 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: (((("quan nam ve snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( quan nam ve snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("quan nam ve snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.