Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dong xanh di snippets" » "duong xanh di snippets", "dong anh di snippets", "song xanh di snippets", "dong danh di snippets", "dong vanh dai snippets", "dong xanh tai 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 xanh di 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 xanh di snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dong xanh di snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dong xanh di snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.