Perhaps you should try some spelling variations:
"dusing java java snippets" » "using java java snippets"
"banh kem java slippers" » "hanh kem java slippers", "banh keo java slippers", "ban kem java slippers", "banh kem java slippery", "banh kem 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: (((("banh kem 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: (((("banh kem java slippers") OR ("dusing java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( banh kem java slippers ) or ( dusing java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("banh kem java slippers") or ("dusing java java snippets"))) or ("locating bug code snippets"))*.