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