Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"pham banh do snippets" » "pham anh do snippets", "pham hanh do snippets", "pham binh do snippets", "pham ban do snippets", "pham benh do snippets", "pham lanh dao 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 banh 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 banh do snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( pham banh do snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("pham banh do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.