Perhaps you should try some spelling variations:
"python using java slippers" » "python using data slippers", "python using java grippers"
"ty trinh van slippery" » "ty trinh han slippery", "ty trinh quan slippery", "ty trinh toan slippery", "ly trinh van slippery", "quy trinh van slippery", "tra trinh van slippery"
"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: (((("ty trinh van slippery") or ("python using java slippers"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("ty trinh van slippery") OR ("python using java slippers"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( ty trinh van slippery ) or ( python using java slippers ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("ty trinh van slippery") or ("python using java slippers"))) or ("locating bug code snippets"))*.