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