Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cong hoc hoi snippets" » "dong hoc hoi snippets", "cong hoa hoi snippets", "cong coc hoi snippets", "cong hoc khoi snippets", "cong hoc hoa snippets", "cong hoc noi 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: (((("cong hoc hoi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cong hoc hoi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cong hoc hoi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cong hoc hoi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.