Perhaps you should try some spelling variations:
"using java code snippets" » "using data code snippets", "using java core snippets", "using java code slippers"
"lua xuan trinh snippets" » "lua qua trinh snippets", "lua xuan dinh snippets", "lua xuan kinh snippets", "mua xuan trinh snippets", "luat quan trinh snippets", "luat xuat trinh snippets", "lua xuan trinh slippers"
"locating bug code snippets" » "locating bug core snippets", "locating bug code slippers", "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 ("lua xuan trinh snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("using java code snippets") OR ("lua xuan trinh snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( using java code snippets ) or ( lua xuan trinh snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("using java code snippets") or ("lua xuan trinh snippets"))) or ("locating bug code snippets"))*.