Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"vang cua co snippets" » "mang cua co snippets", "hang cua co snippets", "tang cua co snippets", "vang cua bo snippets", "vang cua cong 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: (((("vang cua co snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("vang cua co snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( vang cua co snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("vang cua co snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.