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