Perhaps you should try some spelling variations:
"cong phan trac snippets" » "cong nhan trac snippets", "cong khan trac snippets", "chong phap trac snippets", "cong phan tap snippets", "cong phan cac snippets", "cong phan tan snippets"
"hang java java slippers" » "hang va java slippers", "hang java java slippery", "hang java java grippers"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core 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: (((("cong phan trac snippets") or ("hang java java slippers"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cong phan trac snippets") OR ("hang java java slippers"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cong phan trac snippets ) or ( hang java java slippers ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cong phan trac snippets") or ("hang java java slippers"))) or ("locating bug code snippets"))*.