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