Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hoc dung lua slippers" » "hoc ung lua slippers", "hoc dan lua slippers", "hoc cong lua slippers", "hoc dung luan slippers", "hoc dung luat slippers", "hoc dung cua slippers", "hoc dung lua slippery", "hoc dung lua 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 dung lua 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 dung lua slippers") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hoc dung lua slippers ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hoc dung lua slippers") or ("python using java snippets"))) or ("locating bug code snippets"))*.