Perhaps you should try some spelling variations:
"using java code snippets" » "using data code snippets", "using java core snippets"
"doc lieu data slippers" » "doc lieu dao slippers", "doc bieu dat slippers", "doc lieu da slippers", "duoc lieu data slippers", "doc hieu data slippers", "du lieu data slippers", "doc lieu data slippery", "doc lieu data grippers"
"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 ("doc lieu data slippers"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("using java code snippets") OR ("doc lieu data slippers"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( using java code snippets ) or ( doc lieu data slippers ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("using java code snippets") or ("doc lieu data slippers"))) or ("locating bug code snippets"))*.