Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"doi hien cac snippets" » "doi dien cac snippets", "doi bien cac snippets", "doi kien cac snippets", "doi thien cac snippets", "doi vien cac snippets", "doi hieu cac 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 hien cac 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 hien cac snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( doi hien cac snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("doi hien cac snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.