Perhaps you should try some spelling variations:
"using java code snippets" » "using data code snippets", "using java core snippets"
"sach dan trinh slippers" » "sach dan tinh slippers", "sach van trinh slippers", "sach hanh trinh slippers", "sach danh trinh slippers", "sach dao trinh slippers", "sach dat trinh slippers", "sach dan trinh slippery", "sach dan 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 ("sach dan 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 ("sach dan trinh slippers"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( using java code snippets ) or ( sach dan trinh slippers ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("using java code snippets") or ("sach dan trinh slippers"))) or ("locating bug code snippets"))*.