Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"pham men ho snippets" » "pham yen ho snippets", "pham minh ho snippets", "pham tien ho snippets", "pham hen ho snippets", "pham den ho snippets", "pham min ho 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 men 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 men ho snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( pham men ho snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("pham men ho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.