Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"thu phap lo snippets" » "thuy phap lo snippets", "thu nhap lo snippets", "thi phap lo snippets", "thu phap ly snippets", "thu phap mo snippets", "thu phap so 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: (((("thu phap lo snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("thu phap lo snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( thu phap lo snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thu phap lo snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.