Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"vu ngoi doc snippets" » "vu ngon doc snippets", "vu ngo doc snippets", "vu nguoi doi snippets", "vu ngoai doc snippets", "vu ngoc doc 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: (((("vu ngoi doc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("vu ngoi doc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( vu ngoi doc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("vu ngoi doc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.