Perhaps you should try some spelling variations:
"using java code snippets" » "using data code snippets", "using java core snippets"
"mon viet con snippets" » "man viet con snippets", "mo viet con snippets", "muong viet con snippets", "mon viet co snippets", "mon diet con snippets", "mon giet con 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 ("mon viet con snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("using java code snippets") OR ("mon viet con snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( using java code snippets ) or ( mon viet con snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("using java code snippets") or ("mon viet con snippets"))) or ("locating bug code snippets"))*.