Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"van dai danh slippers" » "van dai dang slippers", "van dao danh slippers", "van day danh slippers", "vanh dai danh slippers", "van hai danh slippers", "van dai danh slippery", "van dai 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: (((("van dai 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: (((("van dai danh slippers") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( van dai danh slippers ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("van dai danh slippers") or ("python using java snippets"))) or ("locating bug code snippets"))*.