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