Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"thong xu cac snippets" » "thong tu cac snippets", "thong su cac snippets", "trong xu cac snippets", "thong xu bac snippets", "thong eu cac 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: (((("thong xu cac snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("thong xu cac snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( thong xu cac snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thong xu cac snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.