Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"duong hoa vo snippets" » "duong khoa vo snippets", "dong hoa vo snippets", "duong hoi vo snippets", "duong hoa co 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: (((("duong hoa vo snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("duong hoa vo snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( duong hoa vo snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("duong hoa vo snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.