Perhaps you should try some spelling variations:
"dung tri code snippets" » "dung tri co snippets", "dung tri cong snippets", "dung tai code snippets", "dung tren code snippets", "nhung tri code snippets", "dung tri code slippers"
"trong nganh java snippets" » "trong nganh java 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 nganh java snippets") or ("dung tri code snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("trong nganh java snippets") OR ("dung tri code snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( trong nganh java snippets ) or ( dung tri code snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("trong nganh java snippets") or ("dung tri code snippets"))) or ("locating bug code snippets"))*.