Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"kenh phan ve snippets" » "benh nhan ve snippets", "benh phau ve snippets", "ke phan ve snippets", "kenh phan le snippets", "kenh phan va snippets", "kenh pha ve 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: (((("kenh phan ve snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("kenh phan ve snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( kenh phan ve snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("kenh phan ve snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.