Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dong viet va slippers" » "cong viet va slippers", "dung viet va slippers", "dang viet va slippers", "dong viet van slippers", "dong viet ha slippers", "dong tiet va slippers", "dong viet va slippery", "dong viet va 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: (((("dong viet va 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 viet va slippers") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dong viet va slippers ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dong viet va slippers") or ("python using java snippets"))) or ("locating bug code snippets"))*.