Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dung vu khoa slippers" » "dung va khoa slippers", "dung cu khoa slippers", "dung du khoa slippers", "dung ve khoa slippers", "dung tu khoa slippers", "dung vu khoa slippery", "dung vu khoa 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: (((("dung vu khoa slippers") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung vu khoa slippers") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung vu khoa slippers ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung vu khoa slippers") or ("python using java snippets"))) or ("locating bug code snippets"))*.