Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"cong bat cong snippets" » "cong bat code snippets", "cong ba cong snippets", "cong bao cong snippets", "cong hat cong snippets", "cong bat dong snippets", "cong ban cong snippets", "cong bot cong 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: (((("dung java java snippets") or ("cong bat cong snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung java java snippets") OR ("cong bat cong snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( dung java java snippets ) or ( cong bat cong snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung java java snippets") or ("cong bat cong snippets"))) or ("locating bug core snippets"))*.