Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hoc quan dan slippers" » "hoc dan dan slippers", "tac quan dan slippers", "hoc phan dan slippers", "hoc quan doan slippers", "hoc quan den slippers", "hoc quan van slippers", "hoc quan dan slippery", "hoc quan dan grippers"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core snippets"

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("hoc quan dan slippers") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("hoc quan dan slippers") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hoc quan dan slippers ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hoc quan dan slippers") or ("python using java snippets"))) or ("locating bug code snippets"))*.