Perhaps you should try some spelling variations:
"trong hanh cac snippets" » "trong thanh cac snippets", "trong anh cac snippets", "trong canh cac snippets", "trong hang cac snippets", "trong hanh cat snippets", "trong nhanh cay snippets"
"dung java java snippets" » "dung 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: (((("trong hanh cac snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("trong hanh cac snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( trong hanh cac snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("trong hanh cac snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.