Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dong phuc do snippets" » "duong phuc do snippets", "dong phu do snippets", "dong thuc do snippets", "dong phuc co snippets", "dong phac 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 phuc 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 phuc do snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dong phuc do snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dong phuc do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.