Perhaps you should try some spelling variations:
"trong canh code snippets" » "trong anh code snippets", "trong cach code snippets", "trong can code snippets", "trong canh code slippers"
"dung thi code snippets" » "dung tai code snippets", "dung tri code snippets", "dung chi code snippets", "dung thi cong snippets", "dung thi hoe snippets", "dung thi code slippers"
"locating bug code snippets" » "locating bug code slippers", "locating bung code snippets", "locating bugs code 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 canh code snippets") or ("dung thi code snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("trong canh code snippets") OR ("dung thi code snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( trong canh code snippets ) or ( dung thi code snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("trong canh code snippets") or ("dung thi code snippets"))) or ("locating bug code snippets"))*.