Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"doi luong do snippets" » "do luong do snippets", "doi tuong do snippets", "dai luong do snippets", "doi luong dao snippets", "doi cuong do snippets", "doi luong du 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 luong 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 luong do snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( doi luong do snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("doi luong do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.