Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"van pham huu slippers" » "san pham huu slippers", "van phan huu slippers", "van phat huu slippers", "van pham duc slippers", "van pham duy slippers", "van phan huy slippers", "van pham huu slippery", "van pham huu 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: (((("van pham huu 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 pham huu slippers") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( van pham huu slippers ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("van pham huu slippers") or ("python using java snippets"))) or ("locating bug code snippets"))*.