Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dat vuong le snippets" » "dai vuong le snippets", "cat luong le snippets", "dat quang le snippets", "dat xuong len snippets", "dat vuong qh snippets", "dat trong le 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: (((("dat vuong le snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dat vuong le snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dat vuong le snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dat vuong le snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.