Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hau can dong snippets" » "hau van dong snippets", "hau dan dong snippets", "hau cao dong snippets", "chau can dong snippets", "nhau can dong 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 can dong 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 can dong snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hau can dong snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hau can dong snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.