Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"trinh do 21 slippers" » "trinh ky 21 slippers", "trinh do 2 slippers", "trinh so 21 slippers", "trinh do 21 slippery", "trinh do 21 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: (((("trinh do 21 slippers") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("trinh do 21 slippers") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( trinh do 21 slippers ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("trinh do 21 slippers") or ("python using java snippets"))) or ("locating bug code snippets"))*.