Perhaps you should try some spelling variations:
"using java java snippets" » "using data java snippets", "using java java slippers"
"gian lan data snippets" » "gian lang data snippets", "gian dan data snippets", "giang van data snippets", "gian a data snippets", "gian dan dat snippets", "gian ban dat snippets", "gian lan data slippers"
"locating bug code snippets" » "locating bug code slippers", "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: (((("gian lan data snippets") or ("using java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("gian lan data snippets") OR ("using java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( gian lan data snippets ) or ( using java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("gian lan data snippets") or ("using java java snippets"))) or ("locating bug code snippets"))*.