Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets", "python using java slippers"
"data vu manh snippets" » "data v0 manh snippets", "data vu minh snippets", "data vu anh snippets", "data tu manh snippets", "data vu manh slippers"
"locating bug code snippets" » "locating bug code slippers", "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: (((("data vu manh snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("data vu manh snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( data vu manh snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("data vu manh snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.