Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"pham hat dan slippers" » "pham nhat dan slippers", "pham chat dan slippers", "pham ha dan slippers", "pham hat van slippers", "pham mat dan slippers", "pham nhat danh slippers", "pham hat dan slippery", "pham hat dan grippers"
"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 hat dan slippers") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("pham hat dan slippers") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( pham hat dan slippers ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("pham hat dan slippers") or ("python using java snippets"))) or ("locating bug code snippets"))*.