Perhaps you should try some spelling variations:
"canh tinh hoi snippets" » "hanh tinh hoi snippets", "manh tinh hoi snippets", "canh tranh hoi snippets", "canh trinh hoi snippets", "canh tinh hoc snippets", "canh tinh hai 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: (((("canh tinh hoi snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("canh tinh hoi snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( canh tinh hoi snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("canh tinh hoi snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.