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