Perhaps you should try some spelling variations:
"dusing java java snippets" » "using java java snippets"
"thi cong java slippers" » "thi cong va slippers", "tai cong java slippers", "thien cong java slippers", "thi cong java slippery", "thi cong 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: (((("thi cong java slippers") or ("dusing java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("thi cong java slippers") OR ("dusing java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( thi cong java slippers ) or ( dusing java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thi cong java slippers") or ("dusing java java snippets"))) or ("locating bug code snippets"))*.