Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"pham mat do snippets" » "ham mat do snippets", "pham ma do snippets", "cham mat do snippets", "pham hat do snippets", "pham mat co snippets", "pham mat da 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 mat do 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 mat do snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( pham mat do snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("pham mat do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.