Perhaps you should try some spelling variations:
"using java code snippets" » "using data code snippets", "using java core snippets"
"tinh can chi snippets" » "tinh cao chi snippets", "tinh ca chi snippets", "minh can chi snippets", "tinh can thi snippets", "tinh van chi snippets", "tinh san chi 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 ("tinh can chi snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("using java code snippets") OR ("tinh can chi snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( using java code snippets ) or ( tinh can chi snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("using java code snippets") or ("tinh can chi snippets"))) or ("locating bug code snippets"))*.