Perhaps you should try some spelling variations:
"nguon thuc 1 snippets" » "nguon thu 1 snippets", "nguyen thuc 1 snippets", "nguoi thuoc 1 snippets", "nguon thuc _ snippets", "nguon thuc 1 slippers"
"python using java snippets" » "python using data snippets", "python using java 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: (((("nguon thuc 1 snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("nguon thuc 1 snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nguon thuc 1 snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nguon thuc 1 snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.