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