Perhaps you should try some spelling variations:
"using data cheo snippets" » "using java cheo snippets", "using sat cheo snippets", "missing data cheo snippets", "using dat cho snippets", "using dat theo snippets", "using hat cheo snippets"
"dung java java snippets" » "dung va java snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core 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 data cheo snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("using data cheo snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( using data cheo snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("using data cheo snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.