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