Perhaps you should try some spelling variations:
"using java code snippets" » "using data code snippets", "using java core snippets"
"truong dao den snippets" » "truong dai den snippets", "truong cao den snippets", "truong bo den snippets", "truong dao dan snippets", "truong dan den snippets", "truong day den 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 ("truong dao den snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("using java code snippets") OR ("truong dao den snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( using java code snippets ) or ( truong dao den snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("using java code snippets") or ("truong dao den snippets"))) or ("locating bug code snippets"))*.