Perhaps you should try some spelling variations:
"trong tang cot snippets" » "trong trang cot snippets", "trong tan cot snippets", "trong dang cot snippets", "trong tong cot snippets", "trong tang co snippets", "trong bang cot snippets"
"hang java java snippets" » "hang va java 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: (((("hang java java snippets") or ("trong tang cot snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("hang java java snippets") OR ("trong tang cot snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hang java java snippets ) or ( trong tang cot snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hang java java snippets") or ("trong tang cot snippets"))) or ("locating bug code snippets"))*.