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