Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dua mot cach snippets" » "dua loi cach snippets", "cua mot cach snippets", "dua moi cach snippets", "qua mot 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 mot 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 mot cach snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dua mot cach snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dua mot cach snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.