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