Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"phap gi he snippets" » "phap gia he snippets", "phap giam he snippets", "phap giao he snippets", "phap gi de snippets", "phap gi ve snippets", "phap vi he 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: (((("phap gi he snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("phap gi he snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( phap gi he snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("phap gi he snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.