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