Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"phan che cua snippets" » "han che cua snippets", "phap che cua snippets", "phan thi cua snippets", "phan cheo cua snippets", "phan chi cua snippets", "phan chu cua 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: (((("phan che cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("phan che cua snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( phan che cua snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("phan che cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.