Perhaps you should try some spelling variations:
"dung cac ham slippers" » "dung cac ham slices", "luong cac ham slippers", "dung cho ham slippers", "dung tai ham slippers", "dung cac cam slippers", "dung cac hat slippers", "dung cac nhan slippers"
"using java code snippets" » "using data code snippets", "using java core 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 ("dung cac ham slippers"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("using java code snippets") OR ("dung cac ham slippers"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( using java code snippets ) or ( dung cac ham slippers ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("using java code snippets") or ("dung cac ham slippers"))) or ("locating bug code snippets"))*.