Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"xac van minh slippers" » "cac van minh slippers", "tac van minh slippers", "sac van minh slippers", "xac van dinh slippers", "xac van minh slippery", "xac van minh 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: (((("xac van minh slippers") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("xac van minh slippers") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( xac van minh slippers ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("xac van minh slippers") or ("python using java snippets"))) or ("locating bug code snippets"))*.