Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"cong vang cho snippets" » "cong vang code snippets", "cong lang cho snippets", "cong quang cho snippets", "cong ngang cho snippets", "cong sang cho snippets", "cong van cho snippets", "cong hang cho 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: (((("cong vang cho snippets") or ("dung java java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cong vang cho snippets") OR ("dung java java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( cong vang cho snippets ) or ( dung java java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cong vang cho snippets") or ("dung java java snippets"))) or ("locating bug core snippets"))*.