Perhaps you should try some spelling variations:
"hang java java snippets" » "hang va java snippets"
"toan cao cong snippets" » "toan ban cong snippets", "toan tap cong snippets", "toan cac cong snippets", "toan cao dang snippets", "toan cua cong 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: (((("toan cao cong snippets") or ("hang java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("toan cao cong snippets") OR ("hang java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( toan cao cong snippets ) or ( hang java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("toan cao cong snippets") or ("hang java java snippets"))) or ("locating bug code snippets"))*.