Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets", "python using java slippers"
"php ve nganh snippets" » "php va nganh snippets", "php vien nganh snippets", "php voi nganh snippets", "phap ve nganh snippets", "pha ve nganh snippets", "php ve nganh slippers"
"locating bug code snippets" » "locating bug code slippers", "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: (((("php ve nganh snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("php ve nganh snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( php ve nganh snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("php ve nganh snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.