Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hoc do nhat slippers" » "hoc moi nhat slippers", "hoc doi nhat slippers", "hoc co nhat slippers", "hoc bo nhat slippers", "hoc do nhat slippery", "hoc do nhat 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: (((("hoc do nhat slippers") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("hoc do nhat slippers") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hoc do nhat slippers ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hoc do nhat slippers") or ("python using java snippets"))) or ("locating bug code snippets"))*.