Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"phan vu minh slippers" » "phan tu minh slippers", "phan va minh slippers", "pham vu minh slippers", "phan vu dinh slippers", "phan van minh slippers", "phan vu minh slippery", "phan vu 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: (((("phan vu 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: (((("phan vu minh slippers") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( phan vu minh slippers ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("phan vu minh slippers") or ("python using java snippets"))) or ("locating bug code snippets"))*.