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