Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"thue van cau snippets" » "thue va cau snippets", "thuc van cau snippets", "thuy van cau snippets", "thue van dau snippets", "thue van hau snippets", "thue van chat 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: (((("thue van cau snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("thue van cau snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( thue van cau snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thue van cau snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.