Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hai pham cau snippets" » "hang pham cau snippets", "loai pham cau snippets", "san pham cau snippets", "hai phan cau snippets", "hai pham ca snippets", "hai pham can 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: (((("hai pham 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: (((("hai pham cau snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hai pham cau snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hai pham cau snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.