Perhaps you should try some spelling variations:
"data using java snippets" » "data using data snippets"
"chung chi cong snippets" » "thuong chi cong snippets", "chung cu cong snippets", "chung vi cong snippets", "chung thi cong snippets", "chung cho cong snippets", "chung phi 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: (((("chung chi cong snippets") or ("data using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("chung chi cong snippets") OR ("data using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( chung chi cong snippets ) or ( data using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("chung chi cong snippets") or ("data using java snippets"))) or ("locating bug code snippets"))*.