Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dong dieu da snippets" » "dang dieu da snippets", "dong dien da snippets", "dong hieu da snippets", "dong dieu d snippets", "dong dieu ta 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 dieu da 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 dieu da snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dong dieu da snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dong dieu da snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.