Perhaps you should try some spelling variations:
"python using java slippery" » "python using data slippery"
"cua vat danh slippers" » "cua va danh slippers", "cua van danh slippers", "cua luat danh slippers", "cua vat danh 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: (((("cua vat danh slippers") or ("python using java slippery"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cua vat danh slippers") OR ("python using java slippery"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cua vat danh slippers ) or ( python using java slippery ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cua vat danh slippers") or ("python using java slippery"))) or ("locating bug code snippets"))*.