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