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