Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"pham ma vo snippets" » "pham va vo snippets", "pham van vo snippets", "pham tai vo snippets", "pham ma so snippets", "pham ha vo 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 ma vo 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 ma vo snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( pham ma vo snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("pham ma vo snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.