Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"pham luat ho snippets" » "phap luat ho snippets", "pham luan ho snippets", "pham xuat ho snippets", "pham luat hoi snippets", "pham luat hop snippets", "pham luat cho 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: (((("pham luat ho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("pham luat ho snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( pham luat ho snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("pham luat ho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.