Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"huong vu con snippets" » "phuong vu con snippets", "hung vu con snippets", "huong va con snippets", "huong vu cong snippets", "huong vu son 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 vu 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: (((("huong vu con snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( huong vu con snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("huong vu con snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.