Perhaps you should try some spelling variations:
"python using java slippers" » "python using data slippers", "python using java slippery", "python using java grippers"
"hoc lon nhat snippets" » "hoc lan nhat snippets", "hoc cong nhat snippets", "hoc dong nhat snippets", "hoc mon nhat snippets", "hoc con nhat snippets", "hoc luong nhat 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: (((("hoc lon nhat snippets") or ("python using java slippers"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("hoc lon nhat snippets") OR ("python using java slippers"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hoc lon nhat snippets ) or ( python using java slippers ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hoc lon nhat snippets") or ("python using java slippers"))) or ("locating bug code snippets"))*.