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