Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nghiep mo ho snippets" » "nghiep moi ho snippets", "nghiep so ho snippets", "nghiep co ho snippets", "nghiep mo hoc 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: (((("nghiep mo ho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("nghiep mo ho snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nghiep mo ho snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nghiep mo ho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.