Perhaps you should try some spelling variations:
"python using java slippers" » "python using data slippers", "python using java slippery", "python using java grippers"
"nhan dot van snippets" » "nhan dat van snippets", "nhay dot van snippets", "nhan dong van snippets", "nhan do van snippets", "nhan doi van snippets", "nhan doan van snippets"
"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: (((("python using java slippers") or ("nhan dot van snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("python using java slippers") OR ("nhan dot van snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( python using java slippers ) or ( nhan dot van snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("python using java slippers") or ("nhan dot van snippets"))) or ("locating bug code snippets"))*.