Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"thong gio he snippets" » "thong giao he snippets", "trong gio he snippets", "khong gio he snippets", "thong gi he snippets", "thong gio hu snippets", "thong gio hieu 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: (((("thong gio 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: (((("thong gio he snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( thong gio he snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thong gio he snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.