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