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