Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hoc luat dan slippers" » "hoc luan dan slippers", "hoc thuat dan slippers", "bo luat dan slippers", "hoc luat dat slippers", "hoc luat doanh slippers", "hoc cua dan slippers", "hoc luat dan slippery", "hoc luat dan 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: (((("hoc luat 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 luat dan slippers") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hoc luat dan slippers ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hoc luat dan slippers") or ("python using java snippets"))) or ("locating bug code snippets"))*.