Perhaps you should try some spelling variations:
"toan tran java snippets" » "thoan tran java snippets", "tan tran java snippets", "hoan tran java snippets", "toan trinh java snippets"
"trong cac che snippets" » "trong cac he snippets", "trong cac chien snippets", "trong cac chat 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 tran java snippets") or ("trong cac che snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("toan tran java snippets") OR ("trong cac che snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( toan tran java snippets ) or ( trong cac che snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("toan tran java snippets") or ("trong cac che snippets"))) or ("locating bug code snippets"))*.