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