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