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