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