Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dong cua son snippets" » "dung cua son snippets", "cong cua son snippets", "huong cua son snippets", "dong cua song snippets", "dong cua san snippets", "dong cua con 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 cua son 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 cua son snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dong cua son snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dong cua son snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.