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