Perhaps you should try some spelling variations:
"using java code snippets" » "using data code snippets", "using java core snippets"
"vuong ha do snippets" » "luong ha do snippets", "duong ha do snippets", "vuong ca do snippets", "vuong hat do snippets", "vuong va do snippets", "vuong xa 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 ("vuong ha 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 ("vuong ha do snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( using java code snippets ) or ( vuong ha do snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("using java code snippets") or ("vuong ha do snippets"))) or ("locating bug code snippets"))*.