Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"voi hang cuu snippets" » "doi khang cuu snippets", "thi hang cuu snippets", "van hang cuu snippets", "voi hang cua snippets", "voi hang cau snippets", "voi hang cung snippets"
"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: (((("voi hang cuu 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 hang cuu snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( voi hang cuu snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("voi hang cuu snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.