Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"thu nhap hon snippets" » "thu ha hon snippets", "khu nha hon snippets", "thu nhap mon snippets", "thu nha hon snippets", "thu phap 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: (((("thu nhap hon snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("thu nhap hon snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( thu nhap hon snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thu nhap hon snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.