Perhaps you should try some spelling variations:
"vong doi cach snippets" » "vong doi code snippets", "trong doi cach snippets", "huong doi cach snippets", "dung doi cach snippets", "vong loi cach snippets", "vong doi canh snippets", "vong dong cach snippets"
"locating bug core snippets" » "locating bug code snippets"
"dung java java snippets" » "dung va java 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: (((("vong doi cach snippets") or ("dung java java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("vong doi cach snippets") OR ("dung java java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( vong doi cach snippets ) or ( dung java java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("vong doi cach snippets") or ("dung java java snippets"))) or ("locating bug core snippets"))*.