Perhaps you should try some spelling variations:
"locating bug code slippers" » "locating bug code snippets", "locating bung code slippers", "locating bugs code slippers"
"python using java snippets" » "python using data snippets"
"tu thuc hanh slippery" » "tu thuoc hanh slippery", "thu thuc hanh slippery", "tu thu hanh slippery", "tu thuc thanh slippery", "tu thuc anh slippery", "tu thuc hinh slippery"

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: (((("tu thuc hanh slippery") or ("python using java snippets"))) or ("locating bug code slippers"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("tu thuc hanh slippery") OR ("python using java snippets"))) OR ("locating bug code slippers")).
• Removing quotes may allow a broader search: (((( tu thuc hanh slippery ) or ( python using java snippets ))) or ( locating bug code slippers )).
• Adding a wildcard symbol may retrieve word variants: (((("tu thuc hanh slippery") or ("python using java snippets"))) or ("locating bug code slippers"))*.