Perhaps you should try some spelling variations:
"dong su ham slippers" » "dong su ham slices", "dang su ham slippers", "dong tu ham slippers", "dong luc ham slippers", "dong su pham slippers", "dong su hai slippers", "dong su nam slippers"
"python using java snippets" » "python using data snippets"
"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: (((("dong su ham slippers") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dong su ham slippers") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dong su ham slippers ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dong su ham slippers") or ("python using java snippets"))) or ("locating bug code snippets"))*.