Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"luoc van cho snippets" » "luoc can cho snippets", "luoc va cho snippets", "luc van cho snippets", "luoc van chi snippets", "luoc san cho snippets", "luoc van chat 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: (((("luoc van cho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("luoc van cho snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( luoc van cho snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("luoc van cho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.