Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"van hoc hap slippers" » "van hoa hap slippers", "van hoc phap slippers", "van hoc nhap slippers", "van hoc tap slippers", "van hoc hap slippery", "van hoc hap 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 hoc hap 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 hoc hap slippers") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( van hoc hap slippers ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("van hoc hap slippers") or ("python using java snippets"))) or ("locating bug code snippets"))*.