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