Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"van huu data slippers" » "van huu dat slippers", "van huu dai slippers", "van huu dang slippers", "van huy data slippers", "van hau data slippers", "san huu data slippers", "van huu data slippery", "van huu data grippers"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("van huu data slippers") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("van huu data slippers") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( van huu data slippers ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("van huu data slippers") or ("python using java snippets"))) or ("locating bug code snippets"))*.