Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dua moi cach snippets" » "dua muoi cach snippets", "dua loi cach snippets", "dua mot cach snippets", "cua moi cach snippets", "dua voi cach snippets", "vua moi cach 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: (((("dua moi cach snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dua moi cach snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dua moi cach snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dua moi cach snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.