Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"doanh van bo snippets" » "doan van bo snippets", "doanh va bo snippets", "doanh ban bo snippets", "doanh van bao snippets", "doanh van bon snippets", "doanh can bo 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: (((("doanh van bo snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("doanh van bo snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( doanh van bo snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("doanh van bo snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.