Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"thong va he snippets" » "thong cua he snippets", "truong va he snippets", "thong qua he snippets", "thong va che snippets", "thong va ghe snippets", "thong va de 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 va 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 va he snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( thong va he snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thong va he snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.