Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"marc vu hoan snippets" » "marc vu hoang snippets", "marc su hoan snippets", "marc thu hoan snippets", "mac vu hoan snippets", "mark vu hoan 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: (((("marc vu hoan snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("marc vu hoan snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( marc vu hoan snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("marc vu hoan snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.