Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"pha cua do snippets" » "phat cua do snippets", "phai cua do snippets", "pham cua do snippets", "pha cua dao snippets", "pha cua bo snippets", "pha cua co 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: (((("pha cua 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: (((("pha cua do snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( pha cua do snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("pha cua do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.