Perhaps you should try some spelling variations:
"data using java snippets" » "data using data snippets"
"huong cau de snippets" » "thuong chau de snippets", "huong dan de snippets", "huong cua de snippets", "huong cau den snippets", "huong cau do snippets", "huong cuu de 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: (((("huong cau de snippets") or ("data using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("huong cau de snippets") OR ("data using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( huong cau de snippets ) or ( data using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("huong cau de snippets") or ("data using java snippets"))) or ("locating bug code snippets"))*.