Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dao cao sach slippers" » "dao co sach slippers", "dao ao sach slippers", "dao cau sach slippers", "dao tao sach slippers", "bao cao sach slippers", "tao cao sach slippers", "dao cao sach slippery", "dao cao sach 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: (((("dao cao sach slippers") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dao cao sach slippers") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dao cao sach slippers ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dao cao sach slippers") or ("python using java snippets"))) or ("locating bug code snippets"))*.