Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dong von tom snippets" » "dung von tom snippets", "dong co tom snippets", "dong hoc tom snippets", "dong lon tom snippets", "dong vuon toi 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 von tom 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 von tom snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dong von tom snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dong von tom snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.