Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dong giam do snippets" » "duong giam do snippets", "dong giao do snippets", "dung giam do snippets", "dong giam doc snippets", "dong gia do snippets", "dong giac do 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 giam do 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 giam do snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dong giam do snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dong giam do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.