Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dong uon doi snippets" » "dong cuon doi snippets", "dong von doi snippets", "dong son doi snippets", "dong huong doi snippets", "dong duong doi snippets", "dong tuong doi 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 uon doi 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 uon doi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dong uon doi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dong uon doi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.