Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dan thuc tre snippets" » "dan toc tre snippets", "am thuc tre snippets", "dan thuc te snippets", "dan thuoc tren snippets", "dan thuc tien 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: (((("dan thuc tre snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dan thuc tre snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dan thuc tre snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dan thuc tre snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.