Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"trinh thi vu slippers" » "trinh tai vu slippers", "trinh thiet vu slippers", "trinh tu vu slippers", "trinh thi vu slippery", "trinh thi vu 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 thi vu 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 thi vu slippers") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( trinh thi vu slippers ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("trinh thi vu slippers") or ("python using java snippets"))) or ("locating bug code snippets"))*.