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