Perhaps you should try some spelling variations:
"using java code snippets" » "using data code snippets", "using java core snippets"
"gian thua do snippets" » "giai thuat do snippets", "gian cua do snippets", "gian ha do snippets", "gian thuat do snippets", "gian thuy do snippets", "gian thu do snippets"
"locating bug code snippets" » "locating bug core snippets", "locating bung code snippets", "locating bugs code 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: (((("using java code snippets") or ("gian thua do snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("using java code snippets") OR ("gian thua do snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( using java code snippets ) or ( gian thua do snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("using java code snippets") or ("gian thua do snippets"))) or ("locating bug code snippets"))*.