Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"phu tich cac snippets" » "chu tich cac snippets", "thu tich cac snippets", "phu tinh cac snippets", "phu tich va snippets", "phu tich bao 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: (((("phu tich cac snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("phu tich cac snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( phu tich cac snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("phu tich cac snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.