Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"doi vai hoc snippets" » "doi voi hoc snippets", "doi va hoc snippets", "doi bai hoc snippets", "doi van hoc snippets", "doi dai hoc 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 vai hoc 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 vai hoc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( doi vai hoc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("doi vai hoc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.