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