Perhaps you should try some spelling variations:
"using java code snippets" » "using data code snippets", "using java core snippets"
"doi tao trinh slippers" » "doi tao tinh slippers", "doi tho trinh slippers", "doi giao trinh slippers", "doi tac trinh slippers", "doi tai trinh slippers", "doi tan trinh slippers", "doi tao trinh slippery", "doi tao trinh 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 ("doi tao trinh slippers"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("using java code snippets") OR ("doi tao trinh slippers"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( using java code snippets ) or ( doi tao trinh slippers ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("using java code snippets") or ("doi tao trinh slippers"))) or ("locating bug code snippets"))*.