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