Perhaps you should try some spelling variations:
"using java code snippets" » "using data code snippets", "using java core snippets"
"khan tao trinh slippers" » "khan tao tinh slippers", "khan tho trinh slippers", "khan giao trinh slippers", "nhan tao trinh slippers", "khan than trinh slippers", "khoan tai trinh slippers", "khan tao trinh slippery", "khan 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 ("khan 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 ("khan tao trinh slippers"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( using java code snippets ) or ( khan tao trinh slippers ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("using java code snippets") or ("khan tao trinh slippers"))) or ("locating bug code snippets"))*.