Perhaps you should try some spelling variations:
"dang using java snippets" » "dang sinh java snippets", "data using java snippets", "dang ung java snippets", "dang using data snippets"
"dong san cong snippets" » "cong san cong snippets", "dong bang cong snippets", "dong von cong snippets", "dong sang cong snippets", "dong van cong snippets", "dong ban cong snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core 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: (((("dang using java snippets") or ("dong san cong snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dang using java snippets") OR ("dong san cong snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dang using java snippets ) or ( dong san cong snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dang using java snippets") or ("dong san cong snippets"))) or ("locating bug code snippets"))*.